78262860 has 96 divisors (see below), whose sum is σ = 237504960. Its totient is φ = 19141632.

The previous prime is 78262853. The next prime is 78262867. The reversal of 78262860 is 6826287.

It is an interprime number because it is at equal distance from previous prime (78262853) and next prime (78262867).

It is a super-2 number, since 2×78262860² = 12250150510759200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (78262867) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 209634 + ... + 210006.

It is an arithmetic number, because the mean of its divisors is an integer number (2474010).

Almost surely, 2^78262860 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78262860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118752480).

78262860 is an abundant number, since it is smaller than the sum of its proper divisors (159242100).

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

78262860 is a wasteful number, since it uses less digits than its factorization.

78262860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667 (or 665 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 78262860 is about 8846.6298667911. The cubic root of 78262860 is about 427.7452920116.

The spelling of 78262860 in words is "seventy-eight million, two hundred sixty-two thousand, eight hundred sixty".