28746401 has 4 divisors (see below), whose sum is σ = 28766400. Its totient is φ = 28726404.

The previous prime is 28746397. The next prime is 28746413. The reversal of 28746401 is 10464782.

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 28746401 - 2² = 28746397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28746101) 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, 7661 + ... + 10778.

It is an arithmetic number, because the mean of its divisors is an integer number (7191600).

Almost surely, 2^28746401 is an apocalyptic number.

It is an amenable number.

28746401 is a deficient number, since it is larger than the sum of its proper divisors (19999).

28746401 is a wasteful number, since it uses less digits than its factorization.

28746401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19998.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 28746401 is about 5361.5670283976. The cubic root of 28746401 is about 306.3335001523. Note that the first 3 decimals are identical.

The spelling of 28746401 in words is "twenty-eight million, seven hundred forty-six thousand, four hundred one".