28358736 has 40 divisors (see below), whose sum is σ = 83726784. Its totient is φ = 8102400.

The previous prime is 28358731. The next prime is 28358767. The reversal of 28358736 is 63785382.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28358731) 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, 41865 + ... + 42536.

Almost surely, 2^28358736 is an apocalyptic number.

It is an amenable number.

28358736 is an abundant number, since it is smaller than the sum of its proper divisors (55368048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28358736 is a wasteful number, since it uses less digits than its factorization.

28358736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84419 (or 84413 counting only the distinct ones).

The product of its digits is 241920, while the sum is 42.

The square root of 28358736 is about 5325.2921046643. The cubic root of 28358736 is about 304.9502238934.

The spelling of 28358736 in words is "twenty-eight million, three hundred fifty-eight thousand, seven hundred thirty-six".