3240387140 has 24 divisors (see below), whose sum is σ = 6933207960. Its totient is φ = 1271698688.

The previous prime is 3240387133. The next prime is 3240387169. The reversal of 3240387140 is 417830423.

It can be written as a sum of positive squares in 4 ways, for example, as 1107425284 + 2132961856 = 33278^2 + 46184^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3240387097 and 3240387106.

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, 1527425 + ... + 1529544.

It is an arithmetic number, because the mean of its divisors is an integer number (288883665).

Almost surely, 2^3240387140 is an apocalyptic number.

It is an amenable number.

3240387140 is an abundant number, since it is smaller than the sum of its proper divisors (3692820820).

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

3240387140 is a wasteful number, since it uses less digits than its factorization.

3240387140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3057031 (or 3057029 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 3240387140 is about 56924.3984597115. The cubic root of 3240387140 is about 1479.7861786302.

The spelling of 3240387140 in words is "three billion, two hundred forty million, three hundred eighty-seven thousand, one hundred forty".