791280078 has 8 divisors (see below), whose sum is σ = 1582560168. Its totient is φ = 263760024.

The previous prime is 791280073. The next prime is 791280101. The reversal of 791280078 is 870082197.

It is a sphenic number, since it is the product of 3 distinct primes.

791280078 is an admirable number.

It is a super-2 number, since 2×791280078² = 1252248323679372168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (791280073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65940001 + ... + 65940012.

It is an arithmetic number, because the mean of its divisors is an integer number (197820021).

Almost surely, 2^791280078 is an apocalyptic number.

791280078 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

791280078 is a wasteful number, since it uses less digits than its factorization.

791280078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131880018.

The product of its (nonzero) digits is 56448, while the sum is 42.

The square root of 791280078 is about 28129.7009937895. The cubic root of 791280078 is about 924.9325796490.

It can be divided in two parts, 7912 and 80078, that added together give a triangular number (87990 = T₄₁₉).

The spelling of 791280078 in words is "seven hundred ninety-one million, two hundred eighty thousand, seventy-eight".