28652913 has 16 divisors (see below), whose sum is σ = 43251840. Its totient is φ = 18740592.

The previous prime is 28652887. The next prime is 28652941. The reversal of 28652913 is 31925682.

It is not a de Polignac number, because 28652913 - 2⁵ = 28652881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28652413) 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, 8581 + ... + 11442.

It is an arithmetic number, because the mean of its divisors is an integer number (2703240).

Almost surely, 2^28652913 is an apocalyptic number.

It is an amenable number.

28652913 is a deficient number, since it is larger than the sum of its proper divisors (14598927).

28652913 is a wasteful number, since it uses less digits than its factorization.

28652913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20085 (or 20079 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 28652913 is about 5352.8415818143. The cubic root of 28652913 is about 306.0010572820.

It can be divided in two parts, 2865 and 2913, that added together give a triangular number (5778 = T₁₀₇).

The spelling of 28652913 in words is "twenty-eight million, six hundred fifty-two thousand, nine hundred thirteen".