2154606400 has 42 divisors (see below), whose sum is σ = 5301682310. Its totient is φ = 861841920.

The previous prime is 2154606373. The next prime is 2154606413. The reversal of 2154606400 is 46064512.

It can be written as a sum of positive squares in 3 ways, for example, as 3873024 + 2150733376 = 1968^2 + 46376^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 671715 + ... + 674914.

Almost surely, 2^2154606400 is an apocalyptic number.

2154606400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2154606400 is an abundant number, since it is smaller than the sum of its proper divisors (3147075910).

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

2154606400 is a wasteful number, since it uses less digits than its factorization.

2154606400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1346651 (or 1346636 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 2154606400 is about 46417.7379888335. The cubic root of 2154606400 is about 1291.5839765772.

The spelling of 2154606400 in words is "two billion, one hundred fifty-four million, six hundred six thousand, four hundred".