78299346 has 16 divisors (see below), whose sum is σ = 156741984. Its totient is φ = 26075904.

The previous prime is 78299329. The next prime is 78299359. The reversal of 78299346 is 64399287.

It is a super-2 number, since 2×78299346² = 12261575168055432, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 78299295 and 78299304.

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 7 ways as a sum of consecutive naturals, for example, 1941 + ... + 12663.

It is an arithmetic number, because the mean of its divisors is an integer number (9796374).

Almost surely, 2^78299346 is an apocalyptic number.

78299346 is an abundant number, since it is smaller than the sum of its proper divisors (78442638).

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

78299346 is a wasteful number, since it uses less digits than its factorization.

78299346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11945.

The product of its digits is 653184, while the sum is 48.

The square root of 78299346 is about 8848.6917677135. The cubic root of 78299346 is about 427.8117530382.

It can be divided in two parts, 782 and 99346, that added together give a triangular number (100128 = T₄₄₇).

The spelling of 78299346 in words is "seventy-eight million, two hundred ninety-nine thousand, three hundred forty-six".