28737364 has 6 divisors (see below), whose sum is σ = 50290394. Its totient is φ = 14368680.

The previous prime is 28737353. The next prime is 28737421. The reversal of 28737364 is 46373782.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 28174864 + 562500 = 5308^2 + 750^2 .

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, 3592167 + ... + 3592174.

Almost surely, 2^28737364 is an apocalyptic number.

It is an amenable number.

28737364 is a deficient number, since it is larger than the sum of its proper divisors (21553030).

28737364 is a wasteful number, since it uses less digits than its factorization.

28737364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7184345 (or 7184343 counting only the distinct ones).

The product of its digits is 169344, while the sum is 40.

The square root of 28737364 is about 5360.7242048067. The cubic root of 28737364 is about 306.3013961220.

The spelling of 28737364 in words is "twenty-eight million, seven hundred thirty-seven thousand, three hundred sixty-four".