2590640240 has 40 divisors (see below), whose sum is σ = 6217542528. Its totient is φ = 1002827520.

The previous prime is 2590640233. The next prime is 2590640257. The reversal of 2590640240 is 420460952.

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

It is a super-2 number, since 2×2590640240² = 13422833706214515200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2590640197 and 2590640206.

It is a congruent number.

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, 519827 + ... + 524786.

Almost surely, 2^2590640240 is an apocalyptic number.

2590640240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2590640240 is an abundant number, since it is smaller than the sum of its proper divisors (3626902288).

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

2590640240 is a wasteful number, since it uses less digits than its factorization.

2590640240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044657 (or 1044651 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 2590640240 is about 50898.3323891854. The cubic root of 2590640240 is about 1373.4168427764.

The spelling of 2590640240 in words is "two billion, five hundred ninety million, six hundred forty thousand, two hundred forty".