28756254 has 16 divisors (see below), whose sum is σ = 58456080. Its totient is φ = 9428160.

The previous prime is 28756243. The next prime is 28756267. The reversal of 28756254 is 45265782.

It is a super-2 number, since 2×28756254² = 1653844288225032, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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, 38919 + ... + 39650.

It is an arithmetic number, because the mean of its divisors is an integer number (3653505).

Almost surely, 2^28756254 is an apocalyptic number.

28756254 is an abundant number, since it is smaller than the sum of its proper divisors (29699826).

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

28756254 is a wasteful number, since it uses less digits than its factorization.

28756254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78635.

The product of its digits is 134400, while the sum is 39.

The square root of 28756254 is about 5362.4858041770. The cubic root of 28756254 is about 306.3684953644.

The spelling of 28756254 in words is "twenty-eight million, seven hundred fifty-six thousand, two hundred fifty-four".