3421998780 has 24 divisors (see below), whose sum is σ = 9581596752. Its totient is φ = 912532992.

The previous prime is 3421998773. The next prime is 3421998791. The reversal of 3421998780 is 878991243.

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, 28516597 + ... + 28516716.

It is an arithmetic number, because the mean of its divisors is an integer number (399233198).

Almost surely, 2^3421998780 is an apocalyptic number.

3421998780 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3421998780 is an abundant number, since it is smaller than the sum of its proper divisors (6159597972).

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

3421998780 is a wasteful number, since it uses less digits than its factorization.

3421998780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57033325 (or 57033323 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 3421998780 is about 58497.8527811064. The cubic root of 3421998780 is about 1506.9307097431.

The spelling of 3421998780 in words is "three billion, four hundred twenty-one million, nine hundred ninety-eight thousand, seven hundred eighty".