78205846 has 16 divisors (see below), whose sum is σ = 119812608. Its totient is φ = 38272000.

The previous prime is 78205823. The next prime is 78205889. The reversal of 78205846 is 64850287.

It is a super-2 number, since 2×78205846² = 12232308697151432, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78205799 and 78205808.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 67371 + ... + 68521.

It is an arithmetic number, because the mean of its divisors is an integer number (7488288).

Almost surely, 2^78205846 is an apocalyptic number.

78205846 is a deficient number, since it is larger than the sum of its proper divisors (41606762).

78205846 is a wasteful number, since it uses less digits than its factorization.

78205846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1847.

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 78205846 is about 8843.4069226741. The cubic root of 78205846 is about 427.6413968625.

The spelling of 78205846 in words is "seventy-eight million, two hundred five thousand, eight hundred forty-six".