2122690840 has 32 divisors (see below), whose sum is σ = 4778928000. Its totient is φ = 848565504.

The previous prime is 2122690837. The next prime is 2122690879. The reversal of 2122690840 is 480962212.

It is a junction number, because it is equal to n+sod(n) for n = 2122690796 and 2122690805.

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, 55276 + ... + 85444.

It is an arithmetic number, because the mean of its divisors is an integer number (149341500).

Almost surely, 2^2122690840 is an apocalyptic number.

2122690840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2122690840 is an abundant number, since it is smaller than the sum of its proper divisors (2656237160).

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

2122690840 is a wasteful number, since it uses less digits than its factorization.

2122690840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31939 (or 31935 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 2122690840 is about 46072.6691217255. The cubic root of 2122690840 is about 1285.1749402244.

The spelling of 2122690840 in words is "two billion, one hundred twenty-two million, six hundred ninety thousand, eight hundred forty".