436642816 has 33 divisors (see below), whose sum is σ = 874197961. Its totient is φ = 217987072.

The previous prime is 436642777. The next prime is 436642837. The reversal of 436642816 is 618246634.

The square root of 436642816 is 20896.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 101606400 + 335036416 = 10080^2 + 18304^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 668346 + ... + 668998.

Almost surely, 2^436642816 is an apocalyptic number.

436642816 is the 20896-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 436642816

436642816 is an abundant number, since it is smaller than the sum of its proper divisors (437555145).

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

436642816 is an frugal number, since it uses more digits than its factorization.

436642816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1326 (or 655 counting only the distinct ones).

The product of its digits is 165888, while the sum is 40.

The cubic root of 436642816 is about 758.6511253920.

The spelling of 436642816 in words is "four hundred thirty-six million, six hundred forty-two thousand, eight hundred sixteen".