28604901 has 8 divisors (see below), whose sum is σ = 41073760. Its totient is φ = 17602992.

The previous prime is 28604887. The next prime is 28604923. The reversal of 28604901 is 10940682.

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

It is not a de Polignac number, because 28604901 - 2⁶ = 28604837 is a prime.

It is a super-2 number, since 2×28604901² = 1636480722439602, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28604941) 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, 366691 + ... + 366768.

It is an arithmetic number, because the mean of its divisors is an integer number (5134220).

Almost surely, 2^28604901 is an apocalyptic number.

It is an amenable number.

28604901 is a deficient number, since it is larger than the sum of its proper divisors (12468859).

28604901 is a wasteful number, since it uses less digits than its factorization.

28604901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733475.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 28604901 is about 5348.3549807394. The cubic root of 28604901 is about 305.8300457409.

The spelling of 28604901 in words is "twenty-eight million, six hundred four thousand, nine hundred one".