1294364872 has 16 divisors (see below), whose sum is σ = 2427497100. Its totient is φ = 647032320.

The previous prime is 1294364867. The next prime is 1294364881. The reversal of 1294364872 is 2784634921.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1294128676 + 236196 = 35974^2 + 486^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23472 + ... + 56032.

Almost surely, 2^1294364872 is an apocalyptic number.

It is an amenable number.

1294364872 is a deficient number, since it is larger than the sum of its proper divisors (1133132228).

1294364872 is a wasteful number, since it uses less digits than its factorization.

1294364872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37536 (or 37532 counting only the distinct ones).

The product of its digits is 580608, while the sum is 46.

The square root of 1294364872 is about 35977.2827211839. The cubic root of 1294364872 is about 1089.8136403893.

It can be divided in two parts, 12943 and 64872, that added together give a triangular number (77815 = T₃₉₄).

The spelling of 1294364872 in words is "one billion, two hundred ninety-four million, three hundred sixty-four thousand, eight hundred seventy-two".