2020642040 has 16 divisors (see below), whose sum is σ = 4546444680. Its totient is φ = 808256800.

The previous prime is 2020642007. The next prime is 2020642097. The reversal of 2020642040 is 402460202.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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, 25257986 + ... + 25258065.

Almost surely, 2^2020642040 is an apocalyptic number.

2020642040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2020642040 is an abundant number, since it is smaller than the sum of its proper divisors (2525802640).

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

2020642040 is a wasteful number, since it uses less digits than its factorization.

2020642040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50516062 (or 50516058 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 2020642040 is about 44951.5521422787. The cubic root of 2020642040 is about 1264.2407792526.

The spelling of 2020642040 in words is "two billion, twenty million, six hundred forty-two thousand, forty".