Search a number
-
+
8145450 = 2325223787
BaseRepresentation
bin11111000100101000101010
3120022211110100
4133010220222
54041123300
6450330230
7126143445
oct37045052
916284410
108145450
114663885
122889976
1318c26c1
14112065c
15aad700
hex7c4a2a

8145450 has 72 divisors (see below), whose sum is σ = 22864608. Its totient is φ = 2075040.

The previous prime is 8145443. The next prime is 8145457. The reversal of 8145450 is 545418.

It is an interprime number because it is at equal distance from previous prime (8145443) and next prime (8145457).

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (8145457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9957 + ... + 10743.

It is an arithmetic number, because the mean of its divisors is an integer number (317564).

Almost surely, 28145450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8145450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11432304).

8145450 is an abundant number, since it is smaller than the sum of its proper divisors (14719158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8145450 is a wasteful number, since it uses less digits than its factorization.

8145450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828 (or 820 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 8145450 is about 2854.0234757269. The cubic root of 8145450 is about 201.2048109128.

The spelling of 8145450 in words is "eight million, one hundred forty-five thousand, four hundred fifty".

Divisors: 1 2 3 5 6 9 10 15 18 23 25 30 45 46 50 69 75 90 115 138 150 207 225 230 345 414 450 575 690 787 1035 1150 1574 1725 2070 2361 3450 3935 4722 5175 7083 7870 10350 11805 14166 18101 19675 23610 35415 36202 39350 54303 59025 70830 90505 108606 118050 162909 177075 181010 271515 325818 354150 452525 543030 814545 905050 1357575 1629090 2715150 4072725 8145450