2030640 has 40 divisors (see below), whose sum is σ = 6295728. Its totient is φ = 541440.

The previous prime is 2030627. The next prime is 2030653. The reversal of 2030640 is 460302.

It is an interprime number because it is at equal distance from previous prime (2030627) and next prime (2030653).

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3991 + ... + 4470.

2^2030640 is an apocalyptic number.

2030640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2030640 is an abundant number, since it is smaller than the sum of its proper divisors (4265088).

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

2030640 is a wasteful number, since it uses less digits than its factorization.

2030640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8477 (or 8471 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 2030640 is about 1425.0052631482. The cubic root of 2030640 is about 126.6322467265.

Subtracting from 2030640 its sum of digits (15), we obtain a square (2030625 = 1425²).

Adding to 2030640 its reverse (460302), we get a palindrome (2490942).

The spelling of 2030640 in words is "two million, thirty thousand, six hundred forty".