28577396 has 12 divisors (see below), whose sum is σ = 50057952. Its totient is φ = 14275128.

The previous prime is 28577389. The next prime is 28577399. The reversal of 28577396 is 69377582.

It is a self number, because there is not a number n which added to its sum of digits gives 28577396.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28577399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2471 + ... + 7953.

It is an arithmetic number, because the mean of its divisors is an integer number (4171496).

Almost surely, 2^28577396 is an apocalyptic number.

It is an amenable number.

28577396 is a deficient number, since it is larger than the sum of its proper divisors (21480556).

28577396 is a wasteful number, since it uses less digits than its factorization.

28577396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6790 (or 6788 counting only the distinct ones).

The product of its digits is 635040, while the sum is 47.

The square root of 28577396 is about 5345.7830109349. The cubic root of 28577396 is about 305.7319908308.

The spelling of 28577396 in words is "twenty-eight million, five hundred seventy-seven thousand, three hundred ninety-six".