45612280 has 32 divisors (see below), whose sum is σ = 117289440. Its totient is φ = 15638400.

The previous prime is 45612263. The next prime is 45612283. The reversal of 45612280 is 8221654.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45612283) 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, 81171 + ... + 81730.

It is an arithmetic number, because the mean of its divisors is an integer number (3665295).

Almost surely, 2^45612280 is an apocalyptic number.

45612280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45612280 is an abundant number, since it is smaller than the sum of its proper divisors (71677160).

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

45612280 is a wasteful number, since it uses less digits than its factorization.

45612280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162919 (or 162915 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 45612280 is about 6753.6864007740. The cubic root of 45612280 is about 357.2952647807.

It can be divided in two parts, 4561 and 2280, that multiplied together give a triangular number (10399080 = T₄₅₆₀).

The spelling of 45612280 in words is "forty-five million, six hundred twelve thousand, two hundred eighty".