28636370 has 32 divisors (see below), whose sum is σ = 59142528. Its totient is φ = 9779328.

The previous prime is 28636351. The next prime is 28636379. The reversal of 28636370 is 7363682.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28636370.

It is not an unprimeable number, because it can be changed into a prime (28636379) 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, 21257 + ... + 22563.

It is an arithmetic number, because the mean of its divisors is an integer number (1848204).

Almost surely, 2^28636370 is an apocalyptic number.

28636370 is an abundant number, since it is smaller than the sum of its proper divisors (30506158).

28636370 is a wasteful number, since it uses less digits than its factorization.

28636370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1634.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 28636370 is about 5351.2961046834. The cubic root of 28636370 is about 305.9421551844.

The spelling of 28636370 in words is "twenty-eight million, six hundred thirty-six thousand, three hundred seventy".