28436970 has 32 divisors (see below), whose sum is σ = 71217792. Its totient is φ = 7253312.

The previous prime is 28436963. The next prime is 28436981. The reversal of 28436970 is 7963482.

It is a super-2 number, since 2×28436970² = 1617322525561800, which contains 22 as substring.

It is a Curzon number.

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, 19917 + ... + 21296.

It is an arithmetic number, because the mean of its divisors is an integer number (2225556).

Almost surely, 2^28436970 is an apocalyptic number.

28436970 is an abundant number, since it is smaller than the sum of its proper divisors (42780822).

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

28436970 is a wasteful number, since it uses less digits than its factorization.

28436970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41246.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 28436970 is about 5332.6325581274. The cubic root of 28436970 is about 305.2303911833.

The spelling of 28436970 in words is "twenty-eight million, four hundred thirty-six thousand, nine hundred seventy".