72902222 has 8 divisors (see below), whose sum is σ = 115785936. Its totient is φ = 34306912.

The previous prime is 72902153. The next prime is 72902233. The reversal of 72902222 is 22220927.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 72902191 and 72902200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1072058 + ... + 1072125.

It is an arithmetic number, because the mean of its divisors is an integer number (14473242).

Almost surely, 2^72902222 is an apocalyptic number.

72902222 is a deficient number, since it is larger than the sum of its proper divisors (42883714).

72902222 is a wasteful number, since it uses less digits than its factorization.

72902222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2144202.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 72902222 is about 8538.2798033328. The cubic root of 72902222 is about 417.7472392661.

The spelling of 72902222 in words is "seventy-two million, nine hundred two thousand, two hundred twenty-two".