45123432 has 32 divisors (see below), whose sum is σ = 112999200. Its totient is φ = 15015744.

The previous prime is 45123413. The next prime is 45123433. The reversal of 45123432 is 23432154.

It is a super-2 number, since 2×45123432² = 4072248230917248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (45123433) 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 7 ways as a sum of consecutive naturals, for example, 17694 + ... + 20082.

It is an arithmetic number, because the mean of its divisors is an integer number (3531225).

Almost surely, 2^45123432 is an apocalyptic number.

It is an amenable number.

45123432 is an abundant number, since it is smaller than the sum of its proper divisors (67875768).

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

45123432 is a wasteful number, since it uses less digits than its factorization.

45123432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3185 (or 3181 counting only the distinct ones).

The product of its digits is 2880, while the sum is 24.

The square root of 45123432 is about 6717.3977104233. The cubic root of 45123432 is about 356.0142442645.

Adding to 45123432 its reverse (23432154), we get a palindrome (68555586).

The spelling of 45123432 in words is "forty-five million, one hundred twenty-three thousand, four hundred thirty-two".