28372755 has 32 divisors (see below), whose sum is σ = 46889280. Its totient is φ = 14643200.

The previous prime is 28372741. The next prime is 28372769. The reversal of 28372755 is 55727382.

It is an interprime number because it is at equal distance from previous prime (28372741) and next prime (28372769).

It is not a de Polignac number, because 28372755 - 2⁵ = 28372723 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70555 + ... + 70955.

It is an arithmetic number, because the mean of its divisors is an integer number (1465290).

Almost surely, 2^28372755 is an apocalyptic number.

28372755 is a deficient number, since it is larger than the sum of its proper divisors (18516525).

28372755 is a wasteful number, since it uses less digits than its factorization.

28372755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551.

The product of its digits is 117600, while the sum is 39.

The square root of 28372755 is about 5326.6082078561. The cubic root of 28372755 is about 305.0004658239. Note that the first 3 decimals are identical.

The spelling of 28372755 in words is "twenty-eight million, three hundred seventy-two thousand, seven hundred fifty-five".