28250436 has 12 divisors (see below), whose sum is σ = 65917712. Its totient is φ = 9416808.

The previous prime is 28250429. The next prime is 28250449. The reversal of 28250436 is 63405282.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1177090 + ... + 1177113.

Almost surely, 2^28250436 is an apocalyptic number.

It is an amenable number.

28250436 is an abundant number, since it is smaller than the sum of its proper divisors (37667276).

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

28250436 is a wasteful number, since it uses less digits than its factorization.

28250436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2354210 (or 2354208 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 28250436 is about 5315.1139216389. The cubic root of 28250436 is about 304.5615342597.

The spelling of 28250436 in words is "twenty-eight million, two hundred fifty thousand, four hundred thirty-six".