28940348 has 12 divisors (see below), whose sum is σ = 52847760. Its totient is φ = 13840992.

The previous prime is 28940321. The next prime is 28940369. The reversal of 28940348 is 84304982.

It is a super-2 number, since 2×28940348² = 1675087484722208, which contains 22 as substring.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 157193 + ... + 157376.

It is an arithmetic number, because the mean of its divisors is an integer number (4403980).

Almost surely, 2^28940348 is an apocalyptic number.

It is an amenable number.

28940348 is a deficient number, since it is larger than the sum of its proper divisors (23907412).

28940348 is a wasteful number, since it uses less digits than its factorization.

28940348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314596 (or 314594 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 28940348 is about 5379.6234068938. The cubic root of 28940348 is about 307.0208829743.

The spelling of 28940348 in words is "twenty-eight million, nine hundred forty thousand, three hundred forty-eight".