28719652 has 12 divisors (see below), whose sum is σ = 54125596. Its totient is φ = 13255200.

The previous prime is 28719631. The next prime is 28719661. The reversal of 28719652 is 25691782.

It can be written as a sum of positive squares in 2 ways, for example, as 1115136 + 27604516 = 1056^2 + 5254^2 .

It is a super-2 number, since 2×28719652² = 1649636822002208, which contains 22 as substring.

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, 276099 + ... + 276202.

Almost surely, 2^28719652 is an apocalyptic number.

It is an amenable number.

28719652 is a deficient number, since it is larger than the sum of its proper divisors (25405944).

28719652 is a wasteful number, since it uses less digits than its factorization.

28719652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552318 (or 552316 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The square root of 28719652 is about 5359.0719345797. The cubic root of 28719652 is about 306.2384545418.

The spelling of 28719652 in words is "twenty-eight million, seven hundred nineteen thousand, six hundred fifty-two".