20240640620 has 24 divisors (see below), whose sum is σ = 43017461424. Its totient is φ = 7998710336.

The previous prime is 20240640599. The next prime is 20240640631. The reversal of 20240640620 is 2604604202.

It is a self number, because there is not a number n which added to its sum of digits gives 20240640620.

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, 6094919 + ... + 6098238.

It is an arithmetic number, because the mean of its divisors is an integer number (1792394226).

Almost surely, 2^20240640620 is an apocalyptic number.

20240640620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20240640620 is an abundant number, since it is smaller than the sum of its proper divisors (22776820804).

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

20240640620 is a wasteful number, since it uses less digits than its factorization.

20240640620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12193249 (or 12193247 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The spelling of 20240640620 in words is "twenty billion, two hundred forty million, six hundred forty thousand, six hundred twenty".