2640642030 has 48 divisors (see below), whose sum is σ = 7393800960. Its totient is φ = 650003904.

The previous prime is 2640642007. The next prime is 2640642049. The reversal of 2640642030 is 302460462.

It is a junction number, because it is equal to n+sod(n) for n = 2640641985 and 2640642003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1127310 + ... + 1129649.

It is an arithmetic number, because the mean of its divisors is an integer number (154037520).

Almost surely, 2^2640642030 is an apocalyptic number.

2640642030 is an abundant number, since it is smaller than the sum of its proper divisors (4753158930).

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

2640642030 is a wasteful number, since it uses less digits than its factorization.

2640642030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2256985 (or 2256982 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 2640642030 is about 51387.1776808184. The cubic root of 2640642030 is about 1382.1966747754.

The spelling of 2640642030 in words is "two billion, six hundred forty million, six hundred forty-two thousand, thirty".