2045900 has 36 divisors (see below), whose sum is σ = 4557000. Its totient is φ = 796800.

The previous prime is 2045891. The next prime is 2045903. The reversal of 2045900 is 95402.

2045900 = T₃₉₂ + T₃₉₃ + ... + T₄₁₆.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (2045903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3851 + ... + 4349.

2^2045900 is an apocalyptic number.

2045900 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 2045900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2278500).

2045900 is an abundant number, since it is smaller than the sum of its proper divisors (2511100).

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

2045900 is a wasteful number, since it uses less digits than its factorization.

2045900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554 (or 547 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 2045900 is about 1430.3496076135. The cubic root of 2045900 is about 126.9486638156.

The spelling of 2045900 in words is "two million, forty-five thousand, nine hundred".