3132640730 has 32 divisors (see below), whose sum is σ = 5794835904. Its totient is φ = 1218623616.

The previous prime is 3132640727. The next prime is 3132640741. The reversal of 3132640730 is 370462313.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3132640693 and 3132640702.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84557 + ... + 115823.

It is an arithmetic number, because the mean of its divisors is an integer number (181088622).

Almost surely, 2^3132640730 is an apocalyptic number.

3132640730 is a deficient number, since it is larger than the sum of its proper divisors (2662195174).

3132640730 is a wasteful number, since it uses less digits than its factorization.

3132640730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31550.

The product of its (nonzero) digits is 9072, while the sum is 29.

The square root of 3132640730 is about 55969.9984813293. The cubic root of 3132640730 is about 1463.1994528967.

The spelling of 3132640730 in words is "three billion, one hundred thirty-two million, six hundred forty thousand, seven hundred thirty".