28152750 has 32 divisors (see below), whose sum is σ = 70271136. Its totient is φ = 7507200.

The previous prime is 28152727. The next prime is 28152763. The reversal of 28152750 is 5725182.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18019 + ... + 19518.

It is an arithmetic number, because the mean of its divisors is an integer number (2195973).

Almost surely, 2^28152750 is an apocalyptic number.

28152750 is an abundant number, since it is smaller than the sum of its proper divisors (42118386).

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

28152750 is a wasteful number, since it uses less digits than its factorization.

28152750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37557 (or 37547 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 28152750 is about 5305.9165089549. The cubic root of 28152750 is about 304.2100853346.

It can be divided in two parts, 2815 and 2750, that added together give a triangular number (5565 = T₁₀₅).

The spelling of 28152750 in words is "twenty-eight million, one hundred fifty-two thousand, seven hundred fifty".