28542567 has 16 divisors (see below), whose sum is σ = 39229920. Its totient is φ = 18450432.

The previous prime is 28542551. The next prime is 28542581. The reversal of 28542567 is 76524582.

It is not a de Polignac number, because 28542567 - 2⁴ = 28542551 is a prime.

It is a super-4 number, since 4×28542567⁴ (a number of 31 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28542667) 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, 13143 + ... + 15159.

It is an arithmetic number, because the mean of its divisors is an integer number (2451870).

Almost surely, 2^28542567 is an apocalyptic number.

28542567 is a deficient number, since it is larger than the sum of its proper divisors (10687353).

28542567 is a wasteful number, since it uses less digits than its factorization.

28542567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2162.

The product of its digits is 134400, while the sum is 39.

The square root of 28542567 is about 5342.5244033135. The cubic root of 28542567 is about 305.6077356518.

The spelling of 28542567 in words is "twenty-eight million, five hundred forty-two thousand, five hundred sixty-seven".