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307230492 = 22389287669
BaseRepresentation
bin10010010011111…
…111011100011100
3210102002221000010
4102103333130130
51112122333432
650253003220
710420262502
oct2223773434
9712087003
10307230492
111484728a8
1286a83510
134b85cbba
142cb36672
151be8b3cc
hex124ff71c

307230492 has 24 divisors (see below), whose sum is σ = 724928400. Its totient is φ = 101259136.

The previous prime is 307230487. The next prime is 307230503. The reversal of 307230492 is 294032703.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142767 + ... + 144902.

It is an arithmetic number, because the mean of its divisors is an integer number (30205350).

Almost surely, 2307230492 is an apocalyptic number.

It is an amenable number.

307230492 is an abundant number, since it is smaller than the sum of its proper divisors (417697908).

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

307230492 is a wasteful number, since it uses less digits than its factorization.

307230492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287765 (or 287763 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 307230492 is about 17527.9916704681. The cubic root of 307230492 is about 674.7684561112.

The spelling of 307230492 in words is "three hundred seven million, two hundred thirty thousand, four hundred ninety-two".

Divisors: 1 2 3 4 6 12 89 178 267 356 534 1068 287669 575338 863007 1150676 1726014 3452028 25602541 51205082 76807623 102410164 153615246 307230492