45685772 has 24 divisors (see below), whose sum is σ = 87478272. Its totient is φ = 20704400.

The previous prime is 45685771. The next prime is 45685777. The reversal of 45685772 is 27758654.

It is a super-4 number, since 4×45685772⁴ (a number of 32 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (45685771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15497 + ... + 18207.

It is an arithmetic number, because the mean of its divisors is an integer number (3644928).

Almost surely, 2^45685772 is an apocalyptic number.

It is an amenable number.

45685772 is a deficient number, since it is larger than the sum of its proper divisors (41792500).

45685772 is a wasteful number, since it uses less digits than its factorization.

45685772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3109 (or 3107 counting only the distinct ones).

The product of its digits is 470400, while the sum is 44.

The square root of 45685772 is about 6759.1250913117. The cubic root of 45685772 is about 357.4870570892.

The spelling of 45685772 in words is "forty-five million, six hundred eighty-five thousand, seven hundred seventy-two".