78259460 has 12 divisors (see below), whose sum is σ = 164344908. Its totient is φ = 31303776.

The previous prime is 78259451. The next prime is 78259481. The reversal of 78259460 is 6495287.

It can be written as a sum of positive squares in 2 ways, for example, as 28922884 + 49336576 = 5378^2 + 7024^2 .

It is a super-2 number, since 2×78259460² = 12249086158983200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1956467 + ... + 1956506.

It is an arithmetic number, because the mean of its divisors is an integer number (13695409).

Almost surely, 2^78259460 is an apocalyptic number.

It is an amenable number.

78259460 is an abundant number, since it is smaller than the sum of its proper divisors (86085448).

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

78259460 is a wasteful number, since it uses less digits than its factorization.

78259460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3912982 (or 3912980 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 78259460 is about 8846.4377011315. The cubic root of 78259460 is about 427.7390976939.

The spelling of 78259460 in words is "seventy-eight million, two hundred fifty-nine thousand, four hundred sixty".