73245636 has 36 divisors (see below), whose sum is σ = 185985072. Its totient is φ = 24304944.

The previous prime is 73245631. The next prime is 73245649. The reversal of 73245636 is 63654237.

73245636 is a `hidden beast` number, since 73 + 24 + 563 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 73245636.

It is not an unprimeable number, because it can be changed into a prime (73245631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3691 + ... + 12653.

It is an arithmetic number, because the mean of its divisors is an integer number (5166252).

Almost surely, 2^73245636 is an apocalyptic number.

It is an amenable number.

73245636 is an abundant number, since it is smaller than the sum of its proper divisors (112739436).

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

73245636 is a wasteful number, since it uses less digits than its factorization.

73245636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9200 (or 9195 counting only the distinct ones).

The product of its digits is 90720, while the sum is 36.

The square root of 73245636 is about 8558.3664329123. The cubic root of 73245636 is about 418.4021602107.

The spelling of 73245636 in words is "seventy-three million, two hundred forty-five thousand, six hundred thirty-six".