78383402 has 16 divisors (see below), whose sum is σ = 122878080. Its totient is φ = 37429392.

The previous prime is 78383381. The next prime is 78383411. The reversal of 78383402 is 20438387.

It is a super-2 number, since 2×78383402² = 12287915418187208, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49499 + ... + 51057.

It is an arithmetic number, because the mean of its divisors is an integer number (7679880).

Almost surely, 2^78383402 is an apocalyptic number.

78383402 is a deficient number, since it is larger than the sum of its proper divisors (44494678).

78383402 is a wasteful number, since it uses less digits than its factorization.

78383402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2677.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 78383402 is about 8853.4401223479. The cubic root of 78383402 is about 427.9647866042.

The spelling of 78383402 in words is "seventy-eight million, three hundred eighty-three thousand, four hundred two".