28613651 has 8 divisors (see below), whose sum is σ = 32222208. Its totient is φ = 25173000.

The previous prime is 28613621. The next prime is 28613671. The reversal of 28613651 is 15631682.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28613651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28613621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41615 + ... + 42296.

It is an arithmetic number, because the mean of its divisors is an integer number (4027776).

Almost surely, 2^28613651 is an apocalyptic number.

28613651 is a deficient number, since it is larger than the sum of its proper divisors (3608557).

28613651 is a wasteful number, since it uses less digits than its factorization.

28613651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83953.

The product of its digits is 8640, while the sum is 32.

The square root of 28613651 is about 5349.1729267243. The cubic root of 28613651 is about 305.8612261796.

The spelling of 28613651 in words is "twenty-eight million, six hundred thirteen thousand, six hundred fifty-one".