28696635 has 24 divisors (see below), whose sum is σ = 54263664. Its totient is φ = 13913280.

The previous prime is 28696627. The next prime is 28696637. The reversal of 28696635 is 53669682.

It is a happy number.

28696635 is a `hidden beast` number, since 2 + 8 + 6 + 9 + 6 + 635 = 666.

It is not a de Polignac number, because 28696635 - 2³ = 28696627 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28696637) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28492 + ... + 29481.

It is an arithmetic number, because the mean of its divisors is an integer number (2260986).

Almost surely, 2^28696635 is an apocalyptic number.

28696635 is a deficient number, since it is larger than the sum of its proper divisors (25567029).

28696635 is a wasteful number, since it uses less digits than its factorization.

28696635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57995 (or 57992 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 28696635 is about 5356.9240241019. The cubic root of 28696635 is about 306.1566223714.

The spelling of 28696635 in words is "twenty-eight million, six hundred ninety-six thousand, six hundred thirty-five".