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145214814 = 23109222041
BaseRepresentation
bin10001010011111…
…00110101011110
3101010020200021110
420221330311132
5244133333224
622224242450
73412206543
oct1051746536
9333220243
10145214814
1174a74048
1240770426
1324114b34
1415400bca
15cb36929
hex8a7cd5e

145214814 has 16 divisors (see below), whose sum is σ = 293095440. Its totient is φ = 47960640.

The previous prime is 145214813. The next prime is 145214837. The reversal of 145214814 is 418412541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145214813) 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, 110367 + ... + 111674.

It is an arithmetic number, because the mean of its divisors is an integer number (18318465).

Almost surely, 2145214814 is an apocalyptic number.

145214814 is an abundant number, since it is smaller than the sum of its proper divisors (147880626).

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

145214814 is a wasteful number, since it uses less digits than its factorization.

145214814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222155.

The product of its digits is 5120, while the sum is 30.

The square root of 145214814 is about 12050.5109435243. The cubic root of 145214814 is about 525.6180946929.

The spelling of 145214814 in words is "one hundred forty-five million, two hundred fourteen thousand, eight hundred fourteen".

Divisors: 1 2 3 6 109 218 327 654 222041 444082 666123 1332246 24202469 48404938 72607407 145214814