2120757620 has 24 divisors (see below), whose sum is σ = 4455247104. Its totient is φ = 847987616.

The previous prime is 2120757589. The next prime is 2120757649. The reversal of 2120757620 is 267570212.

It is a super-2 number, since 2×2120757620² = 8995225765576128800, which contains 22 as substring.

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, 39797 + ... + 76323.

It is an arithmetic number, because the mean of its divisors is an integer number (185635296).

Almost surely, 2^2120757620 is an apocalyptic number.

2120757620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120757620 is an abundant number, since it is smaller than the sum of its proper divisors (2334489484).

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

2120757620 is a wasteful number, since it uses less digits than its factorization.

2120757620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39439 (or 39437 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 2120757620 is about 46051.6842254439. The cubic root of 2120757620 is about 1284.7846682033.

The spelling of 2120757620 in words is "two billion, one hundred twenty million, seven hundred fifty-seven thousand, six hundred twenty".