Search a number
-
+
80255731 = 2915717627
BaseRepresentation
bin1001100100010…
…01101011110011
312121000102011111
410302021223303
5131021140411
611544054151
71663106503
oct462115363
9177012144
1080255731
1141336356
1222a64357
131381c8ca
14a931a03
1570a4721
hex4c89af3

80255731 has 8 divisors (see below), whose sum is σ = 83556720. Its totient is φ = 76990368.

The previous prime is 80255729. The next prime is 80255741. The reversal of 80255731 is 13755208.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80255731 - 21 = 80255729 is a prime.

It is a super-2 number, since 2×802557312 = 12881964716688722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80255693 and 80255702.

It is not an unprimeable number, because it can be changed into a prime (80255741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4261 + ... + 13366.

It is an arithmetic number, because the mean of its divisors is an integer number (10444590).

Almost surely, 280255731 is an apocalyptic number.

80255731 is a deficient number, since it is larger than the sum of its proper divisors (3300989).

80255731 is a wasteful number, since it uses less digits than its factorization.

80255731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17813.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 80255731 is about 8958.5563011012. The cubic root of 80255731 is about 431.3455794310.

The spelling of 80255731 in words is "eighty million, two hundred fifty-five thousand, seven hundred thirty-one".

Divisors: 1 29 157 4553 17627 511183 2767439 80255731