28049332 has 6 divisors (see below), whose sum is σ = 49086338. Its totient is φ = 14024664.

The previous prime is 28049323. The next prime is 28049341. The reversal of 28049332 is 23394082.

It is an interprime number because it is at equal distance from previous prime (28049323) and next prime (28049341).

It can be written as a sum of positive squares in only one way, i.e., 27815076 + 234256 = 5274^2 + 484^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28049294 and 28049303.

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, 3506163 + ... + 3506170.

Almost surely, 2^28049332 is an apocalyptic number.

It is an amenable number.

28049332 is a deficient number, since it is larger than the sum of its proper divisors (21037006).

28049332 is a wasteful number, since it uses less digits than its factorization.

28049332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7012337 (or 7012335 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 28049332 is about 5296.1620065855. The cubic root of 28049332 is about 303.8371270890.

The spelling of 28049332 in words is "twenty-eight million, forty-nine thousand, three hundred thirty-two".