2320489980 has 72 divisors (see below), whose sum is σ = 7067000304. Its totient is φ = 616320000.

The previous prime is 2320489943. The next prime is 2320490057. The reversal of 2320489980 is 899840232.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19500 + ... + 70860.

It is an arithmetic number, because the mean of its divisors is an integer number (98152782).

Almost surely, 2^2320489980 is an apocalyptic number.

2320489980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2320489980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3533500152).

2320489980 is an abundant number, since it is smaller than the sum of its proper divisors (4746510324).

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

2320489980 is a wasteful number, since it uses less digits than its factorization.

2320489980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51627 (or 51622 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 2320489980 is about 48171.4643746690. The cubic root of 2320489980 is about 1323.9143792960.

The spelling of 2320489980 in words is "two billion, three hundred twenty million, four hundred eighty-nine thousand, nine hundred eighty".