78310226 has 8 divisors (see below), whose sum is σ = 117799164. Its totient is φ = 39043840.

The previous prime is 78310223. The next prime is 78310277. The reversal of 78310226 is 62201387.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 64240225 + 14070001 = 8015^2 + 3751^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×78310226² = 12264982992342152, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78310223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54755 + ... + 56166.

Almost surely, 2^78310226 is an apocalyptic number.

78310226 is a deficient number, since it is larger than the sum of its proper divisors (39488938).

78310226 is a wasteful number, since it uses less digits than its factorization.

78310226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111276.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 78310226 is about 8849.3065265025. The cubic root of 78310226 is about 427.8315674919.

The spelling of 78310226 in words is "seventy-eight million, three hundred ten thousand, two hundred twenty-six".