28364994 has 24 divisors (see below), whose sum is σ = 70237440. Its totient is φ = 8104248.

The previous prime is 28364971. The next prime is 28365019. The reversal of 28364994 is 49946382.

28364994 = T₁₄₃₆ + T₁₄₃₇ + ... + T₁₄₆₂.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112434 + ... + 112685.

It is an arithmetic number, because the mean of its divisors is an integer number (2926560).

Almost surely, 2^28364994 is an apocalyptic number.

28364994 is an abundant number, since it is smaller than the sum of its proper divisors (41872446).

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

28364994 is a wasteful number, since it uses less digits than its factorization.

28364994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225134 (or 225131 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 28364994 is about 5325.8796456548. The cubic root of 28364994 is about 304.9726536442.

The spelling of 28364994 in words is "twenty-eight million, three hundred sixty-four thousand, nine hundred ninety-four".