28614561 has 16 divisors (see below), whose sum is σ = 40065600. Its totient is φ = 18139968.

The previous prime is 28614559. The next prime is 28614563. The reversal of 28614561 is 16541682.

It is an interprime number because it is at equal distance from previous prime (28614559) and next prime (28614563).

It is not a de Polignac number, because 28614561 - 2¹ = 28614559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28614563) 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, 3375 + ... + 8283.

It is an arithmetic number, because the mean of its divisors is an integer number (2504100).

Almost surely, 2^28614561 is an apocalyptic number.

It is an amenable number.

28614561 is a deficient number, since it is larger than the sum of its proper divisors (11451039).

28614561 is a wasteful number, since it uses less digits than its factorization.

28614561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5008.

The product of its digits is 11520, while the sum is 33.

The square root of 28614561 is about 5349.2579859266. The cubic root of 28614561 is about 305.8644685803.

The spelling of 28614561 in words is "twenty-eight million, six hundred fourteen thousand, five hundred sixty-one".