28490701 has 4 divisors (see below), whose sum is σ = 28661472. Its totient is φ = 28319932.

The previous prime is 28490699. The next prime is 28490711. The reversal of 28490701 is 10709482.

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 not a de Polignac number, because 28490701 - 2¹ = 28490699 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28490711) 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, 85135 + ... + 85468.

It is an arithmetic number, because the mean of its divisors is an integer number (7165368).

Almost surely, 2^28490701 is an apocalyptic number.

It is an amenable number.

28490701 is a deficient number, since it is larger than the sum of its proper divisors (170771).

28490701 is a wasteful number, since it uses less digits than its factorization.

28490701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170770.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 28490701 is about 5337.6681238159. The cubic root of 28490701 is about 305.4225121632.

The spelling of 28490701 in words is "twenty-eight million, four hundred ninety thousand, seven hundred one".