783401216 has 36 divisors (see below), whose sum is σ = 1684037292. Its totient is φ = 361568256.

The previous prime is 783401189. The next prime is 783401231. The reversal of 783401216 is 612104387.

It can be written as a sum of positive squares in 2 ways, for example, as 233967616 + 549433600 = 15296^2 + 23440^2 .

It is a super-2 number, since 2×783401216² = 1227434930460557312, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114371 + ... + 121026.

Almost surely, 2^783401216 is an apocalyptic number.

It is an amenable number.

783401216 is an abundant number, since it is smaller than the sum of its proper divisors (900636076).

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

783401216 is a wasteful number, since it uses less digits than its factorization.

783401216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235426 (or 235412 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 783401216 is about 27989.3053861649. The cubic root of 783401216 is about 921.8524490065.

The spelling of 783401216 in words is "seven hundred eighty-three million, four hundred one thousand, two hundred sixteen".