28920201 has 16 divisors (see below), whose sum is σ = 39137280. Its totient is φ = 18994320.

The previous prime is 28920173. The next prime is 28920233. The reversal of 28920201 is 10202982.

28920201 is nontrivially palindromic in base 12.

It is not a de Polignac number, because 28920201 - 2⁵ = 28920169 is a prime.

It is a super-3 number, since 3×28920201³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (28920251) 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, 92836 + ... + 93146.

It is an arithmetic number, because the mean of its divisors is an integer number (2446080).

Almost surely, 2^28920201 is an apocalyptic number.

It is an amenable number.

28920201 is a deficient number, since it is larger than the sum of its proper divisors (10217079).

28920201 is a wasteful number, since it uses less digits than its factorization.

28920201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676.

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

The square root of 28920201 is about 5377.7505520431. The cubic root of 28920201 is about 306.9496216145.

The spelling of 28920201 in words is "twenty-eight million, nine hundred twenty thousand, two hundred one".