45972280 has 16 divisors (see below), whose sum is σ = 103437720. Its totient is φ = 18388896.

The previous prime is 45972257. The next prime is 45972307. The reversal of 45972280 is 8227954.

It is a super-2 number, since 2×45972280² = 4226901056796800, which contains 22 as substring.

It is a congruent number.

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, 574614 + ... + 574693.

Almost surely, 2^45972280 is an apocalyptic number.

45972280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45972280 is an abundant number, since it is smaller than the sum of its proper divisors (57465440).

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

45972280 is a wasteful number, since it uses less digits than its factorization.

45972280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149318 (or 1149314 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 45972280 is about 6780.2861296556. The cubic root of 45972280 is about 358.2328001129.

The spelling of 45972280 in words is "forty-five million, nine hundred seventy-two thousand, two hundred eighty".