28690254 has 32 divisors (see below), whose sum is σ = 67508640. Its totient is φ = 9000576.

The previous prime is 28690229. The next prime is 28690273. The reversal of 28690254 is 45209682.

It is a happy number.

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, 14709 + ... + 16544.

It is an arithmetic number, because the mean of its divisors is an integer number (2109645).

Almost surely, 2^28690254 is an apocalyptic number.

28690254 is an abundant number, since it is smaller than the sum of its proper divisors (38818386).

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

28690254 is a wasteful number, since it uses less digits than its factorization.

28690254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31281 (or 31275 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 28690254 is about 5356.3284066607. The cubic root of 28690254 is about 306.1339283026.

The spelling of 28690254 in words is "twenty-eight million, six hundred ninety thousand, two hundred fifty-four".