28738468 has 18 divisors (see below), whose sum is σ = 55280918. Its totient is φ = 13062720.

The previous prime is 28738459. The next prime is 28738513. The reversal of 28738468 is 86483782.

It can be written as a sum of positive squares in only one way, i.e., 28111204 + 627264 = 5302^2 + 792^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29205 + ... + 30172.

Almost surely, 2^28738468 is an apocalyptic number.

It is an amenable number.

28738468 is a deficient number, since it is larger than the sum of its proper divisors (26542450).

28738468 is a wasteful number, since it uses less digits than its factorization.

28738468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59403 (or 59390 counting only the distinct ones).

The product of its digits is 516096, while the sum is 46.

The square root of 28738468 is about 5360.8271749796. The cubic root of 28738468 is about 306.3053184536.

The spelling of 28738468 in words is "twenty-eight million, seven hundred thirty-eight thousand, four hundred sixty-eight".