28899748 has 6 divisors (see below), whose sum is σ = 50574566. Its totient is φ = 14449872.

The previous prime is 28899743. The next prime is 28899749. The reversal of 28899748 is 84799882.

It can be written as a sum of positive squares in only one way, i.e., 28111204 + 788544 = 5302^2 + 888^2 .

It is not an unprimeable number, because it can be changed into a prime (28899743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3612465 + ... + 3612472.

Almost surely, 2^28899748 is an apocalyptic number.

It is an amenable number.

28899748 is a deficient number, since it is larger than the sum of its proper divisors (21674818).

28899748 is a wasteful number, since it uses less digits than its factorization.

28899748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7224941 (or 7224939 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 55.

The square root of 28899748 is about 5375.8485841772. The cubic root of 28899748 is about 306.8772440496.

The spelling of 28899748 in words is "twenty-eight million, eight hundred ninety-nine thousand, seven hundred forty-eight".