2140400 has 30 divisors (see below), whose sum is σ = 5143272. Its totient is φ = 856000.

The previous prime is 2140399. The next prime is 2140421. The reversal of 2140400 is 40412.

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, 2276 + ... + 3075.

2^2140400 is an apocalyptic number.

2140400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2140400 is an abundant number, since it is smaller than the sum of its proper divisors (3002872).

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

2140400 is a wasteful number, since it uses less digits than its factorization.

2140400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5369 (or 5358 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 2140400 is about 1463.0105946301. The cubic root of 2140400 is about 128.8739027804.

Adding to 2140400 its reverse (40412), we get a palindrome (2180812).

The spelling of 2140400 in words is "two million, one hundred forty thousand, four hundred".