45216728 has 8 divisors (see below), whose sum is σ = 84781380. Its totient is φ = 22608360.

The previous prime is 45216709. The next prime is 45216733. The reversal of 45216728 is 82761254.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×45216728³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2826038 + ... + 2826053.

Almost surely, 2^45216728 is an apocalyptic number.

It is an amenable number.

45216728 is a deficient number, since it is larger than the sum of its proper divisors (39564652).

45216728 is a wasteful number, since it uses less digits than its factorization.

45216728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5652097 (or 5652093 counting only the distinct ones).

The product of its digits is 26880, while the sum is 35.

The square root of 45216728 is about 6724.3384804752. The cubic root of 45216728 is about 356.2594371974.

The spelling of 45216728 in words is "forty-five million, two hundred sixteen thousand, seven hundred twenty-eight".