2397994020 has 36 divisors (see below), whose sum is σ = 7273915740. Its totient is φ = 639465024.

The previous prime is 2397993989. The next prime is 2397994031. The reversal of 2397994020 is 204997932.

2397994020 is a `hidden beast` number, since 239 + 7 + 9 + 9 + 402 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 305480484 + 2092513536 = 17478^2 + 45744^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6660915 + ... + 6661274.

It is an arithmetic number, because the mean of its divisors is an integer number (202053215).

Almost surely, 2^2397994020 is an apocalyptic number.

2397994020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2397994020 is an abundant number, since it is smaller than the sum of its proper divisors (4875921720).

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

2397994020 is a wasteful number, since it uses less digits than its factorization.

2397994020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13322204 (or 13322199 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 2397994020 is about 48969.3171281773. The cubic root of 2397994020 is about 1338.4927769928.

The spelling of 2397994020 in words is "two billion, three hundred ninety-seven million, nine hundred ninety-four thousand, twenty".