28961602 has 8 divisors (see below), whose sum is σ = 44616636. Its totient is φ = 14089392.

The previous prime is 28961599. The next prime is 28961617. The reversal of 28961602 is 20616982.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21986721 + 6974881 = 4689^2 + 2641^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195613 + ... + 195760.

Almost surely, 2^28961602 is an apocalyptic number.

28961602 is a deficient number, since it is larger than the sum of its proper divisors (15655034).

28961602 is a wasteful number, since it uses less digits than its factorization.

28961602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391412.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 28961602 is about 5381.5984614239. The cubic root of 28961602 is about 307.0960240318.

The spelling of 28961602 in words is "twenty-eight million, nine hundred sixty-one thousand, six hundred two".