78901226 has 4 divisors (see below), whose sum is σ = 118351842. Its totient is φ = 39450612.

The previous prime is 78901223. The next prime is 78901237. The reversal of 78901226 is 62210987.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62210987 = 109 ⋅570743.

It can be written as a sum of positive squares in only one way, i.e., 76545001 + 2356225 = 8749^2 + 1535^2 .

It is not an unprimeable number, because it can be changed into a prime (78901223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19725305 + ... + 19725308.

Almost surely, 2^78901226 is an apocalyptic number.

78901226 is a deficient number, since it is larger than the sum of its proper divisors (39450616).

78901226 is a wasteful number, since it uses less digits than its factorization.

78901226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39450615.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 78901226 is about 8882.6362077933. The cubic root of 78901226 is about 428.9051396515.

The spelling of 78901226 in words is "seventy-eight million, nine hundred one thousand, two hundred twenty-six".