28586990 has 8 divisors (see below), whose sum is σ = 51456600. Its totient is φ = 11434792.

The previous prime is 28586983. The next prime is 28587007. The reversal of 28586990 is 9968582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1429340 + ... + 1429359.

It is an arithmetic number, because the mean of its divisors is an integer number (6432075).

Almost surely, 2^28586990 is an apocalyptic number.

28586990 is a deficient number, since it is larger than the sum of its proper divisors (22869610).

28586990 is a wasteful number, since it uses less digits than its factorization.

28586990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2858706.

The product of its (nonzero) digits is 311040, while the sum is 47.

The square root of 28586990 is about 5346.6802784532. The cubic root of 28586990 is about 305.7662004388.

The spelling of 28586990 in words is "twenty-eight million, five hundred eighty-six thousand, nine hundred ninety".