1298364772 has 24 divisors (see below), whose sum is σ = 2396096640. Its totient is φ = 613890720.

The previous prime is 1298364751. The next prime is 1298364779. The reversal of 1298364772 is 2774638921.

It is a happy number.

It is a super-2 number, since 2×1298364772² = 3371502162341223968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1298364779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26997 + ... + 57667.

It is an arithmetic number, because the mean of its divisors is an integer number (99837360).

Almost surely, 2^1298364772 is an apocalyptic number.

It is an amenable number.

1298364772 is a deficient number, since it is larger than the sum of its proper divisors (1097731868).

1298364772 is a wasteful number, since it uses less digits than its factorization.

1298364772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31251 (or 31249 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 49.

The square root of 1298364772 is about 36032.8290868203. The cubic root of 1298364772 is about 1090.9350817739.

The spelling of 1298364772 in words is "one billion, two hundred ninety-eight million, three hundred sixty-four thousand, seven hundred seventy-two".