28745882 has 16 divisors (see below), whose sum is σ = 47291904. Its totient is φ = 12996000.

The previous prime is 28745839. The next prime is 28745891. The reversal of 28745882 is 28854782.

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, 782 + ... + 7622.

It is an arithmetic number, because the mean of its divisors is an integer number (2955744).

Almost surely, 2^28745882 is an apocalyptic number.

28745882 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28745882 is a deficient number, since it is larger than the sum of its proper divisors (18546022).

28745882 is a wasteful number, since it uses less digits than its factorization.

28745882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7045.

The product of its digits is 286720, while the sum is 44.

The square root of 28745882 is about 5361.5186281501. The cubic root of 28745882 is about 306.3316565819.

Subtracting 28745882 from its reverse (28854782), we obtain a square (108900 = 330²).

The spelling of 28745882 in words is "twenty-eight million, seven hundred forty-five thousand, eight hundred eighty-two".