28699652 has 24 divisors (see below), whose sum is σ = 53474400. Its totient is φ = 13438656.

The previous prime is 28699639. The next prime is 28699661. The reversal of 28699652 is 25699682.

It is a happy number.

It is a super-2 number, since 2×28699652² = 1647340049842208, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28699597 and 28699606.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4643 + ... + 8885.

It is an arithmetic number, because the mean of its divisors is an integer number (2228100).

Almost surely, 2^28699652 is an apocalyptic number.

It is an amenable number.

28699652 is a deficient number, since it is larger than the sum of its proper divisors (24774748).

28699652 is a wasteful number, since it uses less digits than its factorization.

28699652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4355 (or 4353 counting only the distinct ones).

The product of its digits is 466560, while the sum is 47.

The square root of 28699652 is about 5357.2056148705. The cubic root of 28699652 is about 306.1673511805.

It can be divided in two parts, 2869 and 9652, that added together give a palindrome (12521).

The spelling of 28699652 in words is "twenty-eight million, six hundred ninety-nine thousand, six hundred fifty-two".