45209736 has 96 divisors (see below), whose sum is σ = 143881920. Its totient is φ = 12643200.

The previous prime is 45209711. The next prime is 45209737. The reversal of 45209736 is 63790254.

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 45209736.

It is not an unprimeable number, because it can be changed into a prime (45209737) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 8101 + ... + 12491.

It is an arithmetic number, because the mean of its divisors is an integer number (1498770).

Almost surely, 2^45209736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45209736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71940960).

45209736 is an abundant number, since it is smaller than the sum of its proper divisors (98672184).

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

45209736 is a wasteful number, since it uses less digits than its factorization.

45209736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4427 (or 4420 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 45209736 is about 6723.8185579327. The cubic root of 45209736 is about 356.2410730912.

The spelling of 45209736 in words is "forty-five million, two hundred nine thousand, seven hundred thirty-six".