28049492 has 6 divisors (see below), whose sum is σ = 49086618. Its totient is φ = 14024744.

The previous prime is 28049477. The next prime is 28049509. The reversal of 28049492 is 29494082.

28049492 is nontrivially palindromic in base 15.

It can be written as a sum of positive squares in only one way, i.e., 18783556 + 9265936 = 4334^2 + 3044^2 .

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, 3506183 + ... + 3506190.

It is an arithmetic number, because the mean of its divisors is an integer number (8181103).

Almost surely, 2^28049492 is an apocalyptic number.

It is an amenable number.

28049492 is a deficient number, since it is larger than the sum of its proper divisors (21037126).

28049492 is a wasteful number, since it uses less digits than its factorization.

28049492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7012377 (or 7012375 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 28049492 is about 5296.1771118421. The cubic root of 28049492 is about 303.8377048074.

The spelling of 28049492 in words is "twenty-eight million, forty-nine thousand, four hundred ninety-two".