2621022636 has 24 divisors (see below), whose sum is σ = 6121668784. Its totient is φ = 872824320.

The previous prime is 2621022623. The next prime is 2621022637. The reversal of 2621022636 is 6362201262.

It is not an unprimeable number, because it can be changed into a prime (2621022637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93325 + ... + 118116.

Almost surely, 2^2621022636 is an apocalyptic number.

It is an amenable number.

2621022636 is an abundant number, since it is smaller than the sum of its proper divisors (3500646148).

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

2621022636 is a wasteful number, since it uses less digits than its factorization.

2621022636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212481 (or 212479 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 2621022636 is about 51195.9240174450. The cubic root of 2621022636 is about 1378.7650219977.

Adding to 2621022636 its reverse (6362201262), we get a palindrome (8983223898).

The spelling of 2621022636 in words is "two billion, six hundred twenty-one million, twenty-two thousand, six hundred thirty-six".