3622216820 has 24 divisors (see below), whose sum is σ = 7657713000. Its totient is φ = 1439161472.

The previous prime is 3622216817. The next prime is 3622216831. The reversal of 3622216820 is 286122263.

It can be written as a sum of positive squares in 4 ways, for example, as 540190564 + 3082026256 = 23242^2 + 55516^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 604775 + ... + 610734.

It is an arithmetic number, because the mean of its divisors is an integer number (319071375).

Almost surely, 2^3622216820 is an apocalyptic number.

It is an amenable number.

3622216820 is an abundant number, since it is smaller than the sum of its proper divisors (4035496180).

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

3622216820 is a wasteful number, since it uses less digits than its factorization.

3622216820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215667 (or 1215665 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 3622216820 is about 60184.8554039968. The cubic root of 3622216820 is about 1535.7651714618.

The spelling of 3622216820 in words is "three billion, six hundred twenty-two million, two hundred sixteen thousand, eight hundred twenty".