28490973 has 8 divisors (see below), whose sum is σ = 43414848. Its totient is φ = 16280544.

The previous prime is 28490927. The next prime is 28490981. The reversal of 28490973 is 37909482.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28490973 - 2⁶ = 28490909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28490993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 678336 + ... + 678377.

It is an arithmetic number, because the mean of its divisors is an integer number (5426856).

Almost surely, 2^28490973 is an apocalyptic number.

It is an amenable number.

28490973 is a deficient number, since it is larger than the sum of its proper divisors (14923875).

28490973 is a wasteful number, since it uses less digits than its factorization.

28490973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356723.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 28490973 is about 5337.6936030462. The cubic root of 28490973 is about 305.4234841138.

The spelling of 28490973 in words is "twenty-eight million, four hundred ninety thousand, nine hundred seventy-three".