28625901 has 16 divisors (see below), whose sum is σ = 39354624. Its totient is φ = 18494784.

The previous prime is 28625899. The next prime is 28625921. The reversal of 28625901 is 10952682.

It is not a de Polignac number, because 28625901 - 2¹ = 28625899 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28625921) 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, 51115 + ... + 51671.

It is an arithmetic number, because the mean of its divisors is an integer number (2459664).

Almost surely, 2^28625901 is an apocalyptic number.

It is an amenable number.

28625901 is a deficient number, since it is larger than the sum of its proper divisors (10728723).

28625901 is a wasteful number, since it uses less digits than its factorization.

28625901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 28625901 is about 5350.3178410259. The cubic root of 28625901 is about 305.9048681166.

The spelling of 28625901 in words is "twenty-eight million, six hundred twenty-five thousand, nine hundred one".