78260786 has 16 divisors (see below), whose sum is σ = 119707200. Its totient is φ = 38362128.

The previous prime is 78260779. The next prime is 78260803. The reversal of 78260786 is 68706287.

It is a happy number.

It is a super-2 number, since 2×78260786² = 12249501250675592, which contains 22 as substring.

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, 59411 + ... + 60713.

It is an arithmetic number, because the mean of its divisors is an integer number (7481700).

Almost surely, 2^78260786 is an apocalyptic number.

78260786 is a deficient number, since it is larger than the sum of its proper divisors (41446414).

78260786 is a wasteful number, since it uses less digits than its factorization.

78260786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1873.

The product of its (nonzero) digits is 225792, while the sum is 44.

The square root of 78260786 is about 8846.5126462352. The cubic root of 78260786 is about 427.7415134991.

The spelling of 78260786 in words is "seventy-eight million, two hundred sixty thousand, seven hundred eighty-six".