28962081 has 6 divisors (see below), whose sum is σ = 41834130. Its totient is φ = 19308048.

The previous prime is 28962079. The next prime is 28962127. The reversal of 28962081 is 18026982.

28962081 is a `hidden beast` number, since 28 + 9 + 620 + 8 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 27878400 + 1083681 = 5280^2 + 1041^2 .

It is not a de Polignac number, because 28962081 - 2¹ = 28962079 is a prime.

It is a super-2 number, since 2×28962081² = 1677604271701122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28962181) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1608996 + ... + 1609013.

It is an arithmetic number, because the mean of its divisors is an integer number (6972355).

Almost surely, 2^28962081 is an apocalyptic number.

It is an amenable number.

28962081 is a deficient number, since it is larger than the sum of its proper divisors (12872049).

28962081 is a wasteful number, since it uses less digits than its factorization.

28962081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3218015 (or 3218012 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 28962081 is about 5381.6429647460. The cubic root of 28962081 is about 307.0977170572.

The spelling of 28962081 in words is "twenty-eight million, nine hundred sixty-two thousand, eighty-one".