28952401 has 4 divisors (see below), whose sum is σ = 28986292. Its totient is φ = 28918512.

The previous prime is 28952393. The next prime is 28952431. The reversal of 28952401 is 10425982.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14814801 + 14137600 = 3849^2 + 3760^2 .

It is a cyclic number.

It is not a de Polignac number, because 28952401 - 2³ = 28952393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28952431) 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, 15630 + ... + 17383.

It is an arithmetic number, because the mean of its divisors is an integer number (7246573).

Almost surely, 2^28952401 is an apocalyptic number.

It is an amenable number.

28952401 is a deficient number, since it is larger than the sum of its proper divisors (33891).

28952401 is an equidigital number, since it uses as much as digits as its factorization.

28952401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33890.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 28952401 is about 5380.7435359809. The cubic root of 28952401 is about 307.0634994752.

The spelling of 28952401 in words is "twenty-eight million, nine hundred fifty-two thousand, four hundred one".