2149900 has 18 divisors (see below), whose sum is σ = 4665500. Its totient is φ = 859920.

The previous prime is 2149897. The next prime is 2149909. The reversal of 2149900 is 99412.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (2149909) 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, 10650 + ... + 10849.

2^2149900 is an apocalyptic number.

2149900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2149900 is an abundant number, since it is smaller than the sum of its proper divisors (2515600).

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

2149900 is a wasteful number, since it uses less digits than its factorization.

2149900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21513 (or 21506 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 2149900 is about 1466.2537297480. The cubic root of 2149900 is about 129.0642870087.

The spelling of 2149900 in words is "two million, one hundred forty-nine thousand, nine hundred".