1290929772 has 48 divisors (see below), whose sum is σ = 3366163584. Its totient is φ = 381648000.

The previous prime is 1290929767. The next prime is 1290929779. The reversal of 1290929772 is 2779290921.

It is not an unprimeable number, because it can be changed into a prime (1290929779) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113854 + ... + 124677.

It is an arithmetic number, because the mean of its divisors is an integer number (70128408).

Almost surely, 2^1290929772 is an apocalyptic number.

1290929772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1290929772 is an abundant number, since it is smaller than the sum of its proper divisors (2075233812).

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

1290929772 is a wasteful number, since it uses less digits than its factorization.

1290929772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238590 (or 238588 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 48.

The square root of 1290929772 is about 35929.5111572646. The cubic root of 1290929772 is about 1088.8487049928.

The spelling of 1290929772 in words is "one billion, two hundred ninety million, nine hundred twenty-nine thousand, seven hundred seventy-two".