28282990 has 8 divisors (see below), whose sum is σ = 50909400. Its totient is φ = 11313192.

The previous prime is 28282979. The next prime is 28282999. The reversal of 28282990 is 9928282.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28282999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1414140 + ... + 1414159.

It is an arithmetic number, because the mean of its divisors is an integer number (6363675).

Almost surely, 2^28282990 is an apocalyptic number.

28282990 is a deficient number, since it is larger than the sum of its proper divisors (22626410).

28282990 is a wasteful number, since it uses less digits than its factorization.

28282990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2828306.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 28282990 is about 5318.1754390016. The cubic root of 28282990 is about 304.6784751129.

The spelling of 28282990 in words is "twenty-eight million, two hundred eighty-two thousand, nine hundred ninety".