3622820 has 12 divisors (see below), whose sum is σ = 7607964. Its totient is φ = 1449120.

The previous prime is 3622813. The next prime is 3622831. The reversal of 3622820 is 282263.

It can be written as a sum of positive squares in 2 ways, for example, as 602176 + 3020644 = 776^2 + 1738^2 .

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90551 + ... + 90590.

It is an arithmetic number, because the mean of its divisors is an integer number (633997).

Almost surely, 2^3622820 is an apocalyptic number.

It is an amenable number.

3622820 is an abundant number, since it is smaller than the sum of its proper divisors (3985144).

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

3622820 is a wasteful number, since it uses less digits than its factorization.

3622820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181150 (or 181148 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 3622820 is about 1903.3706943210. The cubic root of 3622820 is about 153.5850413131.

The spelling of 3622820 in words is "three million, six hundred twenty-two thousand, eight hundred twenty".