72206282 has 4 divisors (see below), whose sum is σ = 108309426. Its totient is φ = 36103140.

The previous prime is 72206257. The next prime is 72206297. The reversal of 72206282 is 28260227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28260227 = 2347 ⋅12041.

It can be written as a sum of positive squares in only one way, i.e., 46389721 + 25816561 = 6811^2 + 5081^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18051569 + ... + 18051572.

Almost surely, 2^72206282 is an apocalyptic number.

72206282 is a deficient number, since it is larger than the sum of its proper divisors (36103144).

72206282 is a wasteful number, since it uses less digits than its factorization.

72206282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36103143.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 72206282 is about 8497.4279638018. The cubic root of 72206282 is about 416.4136856503.

The spelling of 72206282 in words is "seventy-two million, two hundred six thousand, two hundred eighty-two".