2031998400 has 210 divisors, whose sum is σ = 7469591360. Its totient is φ = 541831680.

The previous prime is 2031998399. The next prime is 2031998467. The reversal of 2031998400 is 48991302.

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 polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 121761 + ... + 137439.

Almost surely, 2^2031998400 is an apocalyptic number.

2031998400 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 2031998400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3734795680).

2031998400 is an abundant number, since it is smaller than the sum of its proper divisors (5437592960).

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

2031998400 is a wasteful number, since it uses less digits than its factorization.

2031998400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15713 (or 15689 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 2031998400 is about 45077.6929312049. The cubic root of 2031998400 is about 1266.6047738302.

The spelling of 2031998400 in words is "two billion, thirty-one million, nine hundred ninety-eight thousand, four hundred".