780243472 has 10 divisors (see below), whose sum is σ = 1511721758. Its totient is φ = 390121728.

The previous prime is 780243469. The next prime is 780243481. The reversal of 780243472 is 274342087.

It can be written as a sum of positive squares in only one way, i.e., 743325696 + 36917776 = 27264^2 + 6076^2 .

It is a super-2 number, since 2×780243472² = 1217559751197229568, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24382593 + ... + 24382624.

Almost surely, 2^780243472 is an apocalyptic number.

It is an amenable number.

780243472 is a deficient number, since it is larger than the sum of its proper divisors (731478286).

780243472 is a wasteful number, since it uses less digits than its factorization.

780243472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48765225 (or 48765219 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 37.

The square root of 780243472 is about 27932.8385954596. The cubic root of 780243472 is about 920.6121760532.

The spelling of 780243472 in words is "seven hundred eighty million, two hundred forty-three thousand, four hundred seventy-two".