28492090 has 16 divisors (see below), whose sum is σ = 55948320. Its totient is φ = 10360720.

The previous prime is 28492049. The next prime is 28492091. The reversal of 28492090 is 9029482.

It is not an unprimeable number, because it can be changed into a prime (28492091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129400 + ... + 129619.

It is an arithmetic number, because the mean of its divisors is an integer number (3496770).

Almost surely, 2^28492090 is an apocalyptic number.

28492090 is a deficient number, since it is larger than the sum of its proper divisors (27456230).

28492090 is a wasteful number, since it uses less digits than its factorization.

28492090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259037.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 28492090 is about 5337.7982352277. The cubic root of 28492090 is about 305.4274754783.

The spelling of 28492090 in words is "twenty-eight million, four hundred ninety-two thousand, ninety".