45123216 has 20 divisors (see below), whose sum is σ = 116568432. Its totient is φ = 15041056.

The previous prime is 45123191. The next prime is 45123251. The reversal of 45123216 is 61232154.

It is a super-2 number, since 2×45123216² = 4072209244365312, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 469986 + ... + 470081.

Almost surely, 2^45123216 is an apocalyptic number.

It is an amenable number.

45123216 is an abundant number, since it is smaller than the sum of its proper divisors (71445216).

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

45123216 is a wasteful number, since it uses less digits than its factorization.

45123216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940078 (or 940072 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 45123216 is about 6717.3816327495. The cubic root of 45123216 is about 356.0136761989.

The spelling of 45123216 in words is "forty-five million, one hundred twenty-three thousand, two hundred sixteen".