28490292 has 36 divisors (see below), whose sum is σ = 74686976. Its totient is φ = 9496440.

The previous prime is 28490279. The next prime is 28490327. The reversal of 28490292 is 29209482.

28490292 is a `hidden beast` number, since 284 + 90 + 292 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13684 + ... + 15627.

Almost surely, 2^28490292 is an apocalyptic number.

It is an amenable number.

28490292 is an abundant number, since it is smaller than the sum of its proper divisors (46196684).

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

28490292 is a wasteful number, since it uses less digits than its factorization.

28490292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29330 (or 29316 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 28490292 is about 5337.6298110678. The cubic root of 28490292 is about 305.4210506524.

It can be divided in two parts, 28490 and 292, that added together give a palindrome (28782).

The spelling of 28490292 in words is "twenty-eight million, four hundred ninety thousand, two hundred ninety-two".