28862490 has 32 divisors (see below), whose sum is σ = 69564096. Its totient is φ = 7664000.

The previous prime is 28862489. The next prime is 28862507. The reversal of 28862490 is 9426882.

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 5614 + ... + 9446.

It is an arithmetic number, because the mean of its divisors is an integer number (2173878).

Almost surely, 2^28862490 is an apocalyptic number.

28862490 is an abundant number, since it is smaller than the sum of its proper divisors (40701606).

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

28862490 is a wasteful number, since it uses less digits than its factorization.

28862490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4094.

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 28862490 is about 5372.3821531980. The cubic root of 28862490 is about 306.7453103806.

The spelling of 28862490 in words is "twenty-eight million, eight hundred sixty-two thousand, four hundred ninety".