72762226 has 4 divisors (see below), whose sum is σ = 109143342. Its totient is φ = 36381112.

The previous prime is 72762223. The next prime is 72762241. The reversal of 72762226 is 62226727.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62226727 = 113 ⋅550679.

It can be written as a sum of positive squares in only one way, i.e., 55130625 + 17631601 = 7425^2 + 4199^2 .

It is a junction number, because it is equal to n+sod(n) for n = 72762191 and 72762200.

It is not an unprimeable number, because it can be changed into a prime (72762223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18190555 + ... + 18190558.

Almost surely, 2^72762226 is an apocalyptic number.

72762226 is a deficient number, since it is larger than the sum of its proper divisors (36381116).

72762226 is a wasteful number, since it uses less digits than its factorization.

72762226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36381115.

The product of its digits is 28224, while the sum is 34.

The square root of 72762226 is about 8530.0777253200. The cubic root of 72762226 is about 417.4796643495.

The spelling of 72762226 in words is "seventy-two million, seven hundred sixty-two thousand, two hundred twenty-six".