45281916 has 30 divisors (see below), whose sum is σ = 118376720. Its totient is φ = 15093864.

The previous prime is 45281903. The next prime is 45281923. The reversal of 45281916 is 61918254.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 69556 + ... + 70203.

Almost surely, 2^45281916 is an apocalyptic number.

It is an amenable number.

45281916 is an abundant number, since it is smaller than the sum of its proper divisors (73094804).

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

45281916 is a wasteful number, since it uses less digits than its factorization.

45281916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139775 (or 139764 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 45281916 is about 6729.1839029707. The cubic root of 45281916 is about 356.4305588870.

It can be divided in two parts, 45 and 281916, that added together give a square (281961 = 531²).

The spelling of 45281916 in words is "forty-five million, two hundred eighty-one thousand, nine hundred sixteen".