28649356 has 6 divisors (see below), whose sum is σ = 50136380. Its totient is φ = 14324676.

The previous prime is 28649339. The next prime is 28649377. The reversal of 28649356 is 65394682.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3581166 + ... + 3581173.

Almost surely, 2^28649356 is an apocalyptic number.

It is an amenable number.

28649356 is a deficient number, since it is larger than the sum of its proper divisors (21487024).

28649356 is a wasteful number, since it uses less digits than its factorization.

28649356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7162343 (or 7162341 counting only the distinct ones).

The product of its digits is 311040, while the sum is 43.

The square root of 28649356 is about 5352.5093180676. The cubic root of 28649356 is about 305.9883943368.

The spelling of 28649356 in words is "twenty-eight million, six hundred forty-nine thousand, three hundred fifty-six".