2051900 has 54 divisors (see below), whose sum is σ = 4796568. Its totient is φ = 761600.

The previous prime is 2051893. The next prime is 2051923. The reversal of 2051900 is 91502.

It is a super-2 number, since 2×2051900² = 8420587220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 28865 + ... + 28935.

2^2051900 is an apocalyptic number.

2051900 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 2051900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2398284).

2051900 is an abundant number, since it is smaller than the sum of its proper divisors (2744668).

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

2051900 is a wasteful number, since it uses less digits than its factorization.

2051900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119 (or 95 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 2051900 is about 1432.4454614400. The cubic root of 2051900 is about 127.0726432526.

The spelling of 2051900 in words is "two million, fifty-one thousand, nine hundred".