28572701 has 4 divisors (see below), whose sum is σ = 28778400. Its totient is φ = 28367004.

The previous prime is 28572679. The next prime is 28572703. The reversal of 28572701 is 10727582.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28572701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28572703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102641 + ... + 102918.

It is an arithmetic number, because the mean of its divisors is an integer number (7194600).

Almost surely, 2^28572701 is an apocalyptic number.

It is an amenable number.

28572701 is a deficient number, since it is larger than the sum of its proper divisors (205699).

28572701 is a wasteful number, since it uses less digits than its factorization.

28572701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205698.

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 28572701 is about 5345.3438617174. The cubic root of 28572701 is about 305.7152469410.

The spelling of 28572701 in words is "twenty-eight million, five hundred seventy-two thousand, seven hundred one".