28713996 has 18 divisors (see below), whose sum is σ = 72582692. Its totient is φ = 9571320.

The previous prime is 28713991. The next prime is 28714001. The reversal of 28713996 is 69931782.

It is an interprime number because it is at equal distance from previous prime (28713991) and next prime (28714001).

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (28713991) 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, 398770 + ... + 398841.

Almost surely, 2^28713996 is an apocalyptic number.

It is an amenable number.

28713996 is an abundant number, since it is smaller than the sum of its proper divisors (43868696).

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

28713996 is a wasteful number, since it uses less digits than its factorization.

28713996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797621 (or 797616 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 28713996 is about 5358.5442052856. The cubic root of 28713996 is about 306.2183498598.

The spelling of 28713996 in words is "twenty-eight million, seven hundred thirteen thousand, nine hundred ninety-six".