45728646 has 16 divisors (see below), whose sum is σ = 95433984. Its totient is φ = 14580104.

The previous prime is 45728591. The next prime is 45728677. The reversal of 45728646 is 64682754.

45728646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×45728646² = 4182218129986632, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 45728598 and 45728607.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165546 + ... + 165821.

It is an arithmetic number, because the mean of its divisors is an integer number (5964624).

Almost surely, 2^45728646 is an apocalyptic number.

45728646 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

45728646 is an abundant number, since it is smaller than the sum of its proper divisors (49705338).

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

45728646 is a wasteful number, since it uses less digits than its factorization.

45728646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331395.

The product of its digits is 322560, while the sum is 42.

The square root of 45728646 is about 6762.2959118926. The cubic root of 45728646 is about 357.5988505236.

The spelling of 45728646 in words is "forty-five million, seven hundred twenty-eight thousand, six hundred forty-six".