28152567 has 12 divisors (see below), whose sum is σ = 40749384. Its totient is φ = 18729360.

The previous prime is 28152563. The next prime is 28152581. The reversal of 28152567 is 76525182.

It is a happy number.

It is not a de Polignac number, because 28152567 - 2² = 28152563 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28152563) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1717 + ... + 7697.

It is an arithmetic number, because the mean of its divisors is an integer number (3395782).

Almost surely, 2^28152567 is an apocalyptic number.

28152567 is a deficient number, since it is larger than the sum of its proper divisors (12596817).

28152567 is a wasteful number, since it uses less digits than its factorization.

28152567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6510 (or 6507 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 28152567 is about 5305.8992640268. The cubic root of 28152567 is about 304.2094261856.

The spelling of 28152567 in words is "twenty-eight million, one hundred fifty-two thousand, five hundred sixty-seven".