78220060 has 24 divisors (see below), whose sum is σ = 173925360. Its totient is φ = 29447424.

The previous prime is 78220049. The next prime is 78220063. The reversal of 78220060 is 6002287.

It is a super-2 number, since 2×78220060² = 12236755572807200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78220063) 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, 114690 + ... + 115369.

It is an arithmetic number, because the mean of its divisors is an integer number (7246890).

Almost surely, 2^78220060 is an apocalyptic number.

It is an amenable number.

78220060 is an abundant number, since it is smaller than the sum of its proper divisors (95705300).

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

78220060 is a wasteful number, since it uses less digits than its factorization.

78220060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230085 (or 230083 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 78220060 is about 8844.2105357120. The cubic root of 78220060 is about 427.6673033938.

The spelling of 78220060 in words is "seventy-eight million, two hundred twenty thousand, sixty".