2045730 has 64 divisors (see below), whose sum is σ = 5362560. Its totient is φ = 497664.

The previous prime is 2045713. The next prime is 2045731. The reversal of 2045730 is 375402.

It is a happy number.

It is a super-2 number, since 2×2045730² = 8370022465800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2045697 and 2045706.

It is not an unprimeable number, because it can be changed into a prime (2045731) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21042 + ... + 21138.

It is an arithmetic number, because the mean of its divisors is an integer number (83790).

2^2045730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2045730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2681280).

2045730 is an abundant number, since it is smaller than the sum of its proper divisors (3316830).

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

2045730 is a wasteful number, since it uses less digits than its factorization.

2045730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163.

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 2045730 is about 1430.2901803480. The cubic root of 2045730 is about 126.9451475358.

It can be divided in two parts, 2045 and 730, that added together give a triangular number (2775 = T₇₄).

The spelling of 2045730 in words is "two million, forty-five thousand, seven hundred thirty".