2015973720 has 384 divisors, whose sum is σ = 7217683200. Its totient is φ = 486300672.

The previous prime is 2015973709. The next prime is 2015973763. The reversal of 2015973720 is 273795102.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 24288799 + ... + 24288881.

It is an arithmetic number, because the mean of its divisors is an integer number (18796050).

Almost surely, 2^2015973720 is an apocalyptic number.

2015973720 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 2015973720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3608841600).

2015973720 is an abundant number, since it is smaller than the sum of its proper divisors (5201709480).

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

2015973720 is a wasteful number, since it uses less digits than its factorization.

2015973720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239 (or 232 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 2015973720 is about 44899.5959892737. The cubic root of 2015973720 is about 1263.2664302902.

The spelling of 2015973720 in words is "two billion, fifteen million, nine hundred seventy-three thousand, seven hundred twenty".