2045898 has 40 divisors (see below), whose sum is σ = 4673988. Its totient is φ = 668736.

The previous prime is 2045891. The next prime is 2045903. The reversal of 2045898 is 8985402.

It can be written as a sum of positive squares in 2 ways, for example, as 1896129 + 149769 = 1377^2 + 387^2 .

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2045891) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11740 + ... + 11912.

2^2045898 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2045898, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2336994).

2045898 is an abundant number, since it is smaller than the sum of its proper divisors (2628090).

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

2045898 is a wasteful number, since it uses less digits than its factorization.

2045898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260 (or 251 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 2045898 is about 1430.3489084835. The cubic root of 2045898 is about 126.9486224488.

The spelling of 2045898 in words is "two million, forty-five thousand, eight hundred ninety-eight".