28335890 has 32 divisors (see below), whose sum is σ = 55886976. Its totient is φ = 10258560.

The previous prime is 28335869. The next prime is 28335911. The reversal of 28335890 is 9853382.

It is an interprime number because it is at equal distance from previous prime (28335869) and next prime (28335911).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34019 + ... + 34841.

It is an arithmetic number, because the mean of its divisors is an integer number (1746468).

Almost surely, 2^28335890 is an apocalyptic number.

28335890 is a deficient number, since it is larger than the sum of its proper divisors (27551086).

28335890 is a wasteful number, since it uses less digits than its factorization.

28335890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1154.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 28335890 is about 5323.1466258220. The cubic root of 28335890 is about 304.8683118680.

The spelling of 28335890 in words is "twenty-eight million, three hundred thirty-five thousand, eight hundred ninety".