28070356 has 6 divisors (see below), whose sum is σ = 49123130. Its totient is φ = 14035176.

The previous prime is 28070323. The next prime is 28070369. The reversal of 28070356 is 65307082.

It can be written as a sum of positive squares in only one way, i.e., 19660356 + 8410000 = 4434^2 + 2900^2 .

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, 3508791 + ... + 3508798.

Almost surely, 2^28070356 is an apocalyptic number.

It is an amenable number.

28070356 is a deficient number, since it is larger than the sum of its proper divisors (21052774).

28070356 is a wasteful number, since it uses less digits than its factorization.

28070356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7017593 (or 7017591 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 28070356 is about 5298.1464683415. The cubic root of 28070356 is about 303.9130204762.

The spelling of 28070356 in words is "twenty-eight million, seventy thousand, three hundred fifty-six".