2150208400 has 30 divisors (see below), whose sum is σ = 5165876642. Its totient is φ = 860083200.

The previous prime is 2150208353. The next prime is 2150208407. The reversal of 2150208400 is 48020512.

It can be written as a sum of positive squares in 3 ways, for example, as 156050064 + 1994158336 = 12492^2 + 44656^2 .

It is not an unprimeable number, because it can be changed into a prime (2150208407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2687361 + ... + 2688160.

Almost surely, 2^2150208400 is an apocalyptic number.

2150208400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2150208400 is an abundant number, since it is smaller than the sum of its proper divisors (3015668242).

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

2150208400 is a wasteful number, since it uses less digits than its factorization.

2150208400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5375539 (or 5375528 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 2150208400 is about 46370.3396580185. The cubic root of 2150208400 is about 1290.7045807445.

Adding to 2150208400 its reverse (48020512), we get a palindrome (2198228912).

The spelling of 2150208400 in words is "two billion, one hundred fifty million, two hundred eight thousand, four hundred".