7428636 has 18 divisors (see below), whose sum is σ = 18778032. Its totient is φ = 2476200.

The previous prime is 7428599. The next prime is 7428649. The reversal of 7428636 is 6368247.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 206351 = 7428636 / (7 + 4 + 2 + 8 + 6 + 3 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 7428636.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 103140 + ... + 103211.

It is an arithmetic number, because the mean of its divisors is an integer number (1043224).

Almost surely, 2^7428636 is an apocalyptic number.

It is an amenable number.

7428636 is an abundant number, since it is smaller than the sum of its proper divisors (11349396).

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

7428636 is a wasteful number, since it uses less digits than its factorization.

7428636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206361 (or 206356 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 7428636 is about 2725.5524210699. The cubic root of 7428636 is about 195.1205566155.

The spelling of 7428636 in words is "seven million, four hundred twenty-eight thousand, six hundred thirty-six".