45661672 has 32 divisors (see below), whose sum is σ = 99457920. Its totient is φ = 19247040.

The previous prime is 45661621. The next prime is 45661691. The reversal of 45661672 is 27616654.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3268 + ... + 10099.

It is an arithmetic number, because the mean of its divisors is an integer number (3108060).

Almost surely, 2^45661672 is an apocalyptic number.

It is an amenable number.

45661672 is an abundant number, since it is smaller than the sum of its proper divisors (53796248).

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

45661672 is a wasteful number, since it uses less digits than its factorization.

45661672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13441 (or 13437 counting only the distinct ones).

The product of its digits is 60480, while the sum is 37.

The square root of 45661672 is about 6757.3420810256. The cubic root of 45661672 is about 357.4241859219.

It can be divided in two parts, 456 and 61672, that added together give a triangular number (62128 = T₃₅₂).

The spelling of 45661672 in words is "forty-five million, six hundred sixty-one thousand, six hundred seventy-two".