28900401 has 16 divisors (see below), whose sum is σ = 40009728. Its totient is φ = 18536400.

The previous prime is 28900393. The next prime is 28900411. The reversal of 28900401 is 10400982.

It is not a de Polignac number, because 28900401 - 2³ = 28900393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28900411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16950 + ... + 18576.

It is an arithmetic number, because the mean of its divisors is an integer number (2500608).

Almost surely, 2^28900401 is an apocalyptic number.

It is an amenable number.

28900401 is a deficient number, since it is larger than the sum of its proper divisors (11109327).

28900401 is a wasteful number, since it uses less digits than its factorization.

28900401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1852.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 28900401 is about 5375.9093184316. The cubic root of 28900401 is about 306.8795553653.

The spelling of 28900401 in words is "twenty-eight million, nine hundred thousand, four hundred one".