72233426 has 4 divisors (see below), whose sum is σ = 108350142. Its totient is φ = 36116712.

The previous prime is 72233423. The next prime is 72233429. The reversal of 72233426 is 62433227.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (72233423) and next prime (72233429).

It can be written as a sum of positive squares in only one way, i.e., 65205625 + 7027801 = 8075^2 + 2651^2 .

It is not an unprimeable number, because it can be changed into a prime (72233423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18058355 + ... + 18058358.

Almost surely, 2^72233426 is an apocalyptic number.

72233426 is a deficient number, since it is larger than the sum of its proper divisors (36116716).

72233426 is a wasteful number, since it uses less digits than its factorization.

72233426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36116715.

The product of its digits is 12096, while the sum is 29.

The square root of 72233426 is about 8499.0250029047. The cubic root of 72233426 is about 416.4658589363.

The spelling of 72233426 in words is "seventy-two million, two hundred thirty-three thousand, four hundred twenty-six".