28913952 has 48 divisors (see below), whose sum is σ = 76204800. Its totient is φ = 9599232.

The previous prime is 28913947. The next prime is 28913959. The reversal of 28913952 is 25931982.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 28913952.

It is not an unprimeable number, because it can be changed into a prime (28913959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33073 + ... + 33935.

It is an arithmetic number, because the mean of its divisors is an integer number (1587600).

Almost surely, 2^28913952 is an apocalyptic number.

It is an amenable number.

28913952 is an abundant number, since it is smaller than the sum of its proper divisors (47290848).

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

28913952 is a wasteful number, since it uses less digits than its factorization.

28913952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225 (or 1217 counting only the distinct ones).

The product of its digits is 38880, while the sum is 39.

The square root of 28913952 is about 5377.1695156467. The cubic root of 28913952 is about 306.9275117364.

It can be divided in two parts, 289 and 13952, that added together give a palindrome (14241).

The spelling of 28913952 in words is "twenty-eight million, nine hundred thirteen thousand, nine hundred fifty-two".