28290952 has 8 divisors (see below), whose sum is σ = 53045550. Its totient is φ = 14145472.

The previous prime is 28290949. The next prime is 28290953. The reversal of 28290952 is 25909282.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 26977636 + 1313316 = 5194^2 + 1146^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28290953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1768177 + ... + 1768192.

Almost surely, 2^28290952 is an apocalyptic number.

It is an amenable number.

28290952 is a deficient number, since it is larger than the sum of its proper divisors (24754598).

28290952 is a wasteful number, since it uses less digits than its factorization.

28290952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3536375 (or 3536371 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 28290952 is about 5318.9239513270. The cubic root of 28290952 is about 304.7070626423.

The spelling of 28290952 in words is "twenty-eight million, two hundred ninety thousand, nine hundred fifty-two".