78227576 has 32 divisors (see below), whose sum is σ = 170799840. Its totient is φ = 32892288.

The previous prime is 78227563. The next prime is 78227581. The reversal of 78227576 is 67572287.

It is a happy number.

It is a super-2 number, since 2×78227576² = 12239107293671552, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10211 + ... + 16146.

It is an arithmetic number, because the mean of its divisors is an integer number (5337495).

Almost surely, 2^78227576 is an apocalyptic number.

It is an amenable number.

78227576 is an abundant number, since it is smaller than the sum of its proper divisors (92572264).

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

78227576 is a wasteful number, since it uses less digits than its factorization.

78227576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26423 (or 26419 counting only the distinct ones).

The product of its digits is 329280, while the sum is 44.

The square root of 78227576 is about 8844.6354362404. The cubic root of 78227576 is about 427.6810008371.

The spelling of 78227576 in words is "seventy-eight million, two hundred twenty-seven thousand, five hundred seventy-six".