72494226 has 36 divisors (see below), whose sum is σ = 182717262. Its totient is φ = 20712384.

The previous prime is 72494209. The next prime is 72494231. The reversal of 72494226 is 62249427.

It can be written as a sum of positive squares in only one way, i.e., 72335025 + 159201 = 8505^2 + 399^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 40215 + ... + 41978.

Almost surely, 2^72494226 is an apocalyptic number.

72494226 is an abundant number, since it is smaller than the sum of its proper divisors (110223036).

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

72494226 is a wasteful number, since it uses less digits than its factorization.

72494226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82215 (or 82205 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 72494226 is about 8514.3541152574. The cubic root of 72494226 is about 416.9664759206.

The spelling of 72494226 in words is "seventy-two million, four hundred ninety-four thousand, two hundred twenty-six".