2111452400 has 60 divisors (see below), whose sum is σ = 5120277192. Its totient is φ = 836670720.

The previous prime is 2111452391. The next prime is 2111452433. The reversal of 2111452400 is 42541112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18134 + ... + 67466.

Almost surely, 2^2111452400 is an apocalyptic number.

2111452400 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 2111452400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2560138596).

2111452400 is an abundant number, since it is smaller than the sum of its proper divisors (3008824792).

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

2111452400 is a wasteful number, since it uses less digits than its factorization.

2111452400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49458 (or 49447 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 2111452400 is about 45950.5429782935. The cubic root of 2111452400 is about 1282.9028356836.

Adding to 2111452400 its reverse (42541112), we get a palindrome (2153993512).

The spelling of 2111452400 in words is "two billion, one hundred eleven million, four hundred fifty-two thousand, four hundred".