78242608 has 40 divisors (see below), whose sum is σ = 160654400. Its totient is φ = 36811584.

The previous prime is 78242603. The next prime is 78242629. The reversal of 78242608 is 80624287.

It is a super-2 number, since 2×78242608² = 12243811413283328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78242603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48763 + ... + 50341.

It is an arithmetic number, because the mean of its divisors is an integer number (4016360).

Almost surely, 2^78242608 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 78242608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80327200).

78242608 is an abundant number, since it is smaller than the sum of its proper divisors (82411792).

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

78242608 is a wasteful number, since it uses less digits than its factorization.

78242608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1769 (or 1763 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 78242608 is about 8845.4851760658. The cubic root of 78242608 is about 427.7083930918.

The spelling of 78242608 in words is "seventy-eight million, two hundred forty-two thousand, six hundred eight".