28377652 has 6 divisors (see below), whose sum is σ = 49660898. Its totient is φ = 14188824.

The previous prime is 28377637. The next prime is 28377673. The reversal of 28377652 is 25677382.

It can be written as a sum of positive squares in only one way, i.e., 23386896 + 4990756 = 4836^2 + 2234^2 .

It is a super-2 number, since 2×28377652² = 1610582266066208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3547203 + ... + 3547210.

Almost surely, 2^28377652 is an apocalyptic number.

It is an amenable number.

28377652 is a deficient number, since it is larger than the sum of its proper divisors (21283246).

28377652 is a wasteful number, since it uses less digits than its factorization.

28377652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7094417 (or 7094415 counting only the distinct ones).

The product of its digits is 141120, while the sum is 40.

The square root of 28377652 is about 5327.0678614037. The cubic root of 28377652 is about 305.0180120152.

The spelling of 28377652 in words is "twenty-eight million, three hundred seventy-seven thousand, six hundred fifty-two".