80778342 has 16 divisors (see below), whose sum is σ = 162111600. Its totient is φ = 26833632.

The previous prime is 80778337. The next prime is 80778353. The reversal of 80778342 is 24387708.

It is a super-3 number, since 3×80778342³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 80778342.

It is a congruent number.

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, 21217 + ... + 24732.

It is an arithmetic number, because the mean of its divisors is an integer number (10131975).

Almost surely, 2^80778342 is an apocalyptic number.

80778342 is an abundant number, since it is smaller than the sum of its proper divisors (81333258).

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

80778342 is a wasteful number, since it uses less digits than its factorization.

80778342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46247.

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 80778342 is about 8987.6772305196. The cubic root of 80778342 is about 432.2798362670.

The spelling of 80778342 in words is "eighty million, seven hundred seventy-eight thousand, three hundred forty-two".