2115347400 has 240 divisors, whose sum is σ = 7780099140. Its totient is φ = 530841600.

The previous prime is 2115347393. The next prime is 2115347411. The reversal of 2115347400 is 47435112.

2115347400 is a `hidden beast` number, since 211 + 5 + 3 + 47 + 400 = 666.

2115347400 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 1286943876 + 828403524 = 35874^2 + 28782^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 271560 + ... + 279240.

Almost surely, 2^2115347400 is an apocalyptic number.

2115347400 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 2115347400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3890049570).

2115347400 is an abundant number, since it is smaller than the sum of its proper divisors (5664751740).

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

2115347400 is a wasteful number, since it uses less digits than its factorization.

2115347400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7726 (or 7708 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 2115347400 is about 45992.9059747261. The cubic root of 2115347400 is about 1283.6912088258.

The spelling of 2115347400 in words is "two billion, one hundred fifteen million, three hundred forty-seven thousand, four hundred".