28670744 has 8 divisors (see below), whose sum is σ = 53757660. Its totient is φ = 14335368.

The previous prime is 28670731. The next prime is 28670777. The reversal of 28670744 is 44707682.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 28670698 and 28670707.

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, 1791914 + ... + 1791929.

Almost surely, 2^28670744 is an apocalyptic number.

It is an amenable number.

28670744 is a deficient number, since it is larger than the sum of its proper divisors (25086916).

28670744 is a wasteful number, since it uses less digits than its factorization.

28670744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3583849 (or 3583845 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 38.

The square root of 28670744 is about 5354.5068867264. The cubic root of 28670744 is about 306.0645199790.

The spelling of 28670744 in words is "twenty-eight million, six hundred seventy thousand, seven hundred forty-four".