72223342 has 4 divisors (see below), whose sum is σ = 108335016. Its totient is φ = 36111670.

The previous prime is 72223339. The next prime is 72223367. The reversal of 72223342 is 24332227.

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

It is a super-2 number, since 2×72223342² = 10432422259297928, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18055834 + ... + 18055837.

It is an arithmetic number, because the mean of its divisors is an integer number (27083754).

Almost surely, 2^72223342 is an apocalyptic number.

72223342 is a deficient number, since it is larger than the sum of its proper divisors (36111674).

72223342 is a wasteful number, since it uses less digits than its factorization.

72223342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36111673.

The product of its digits is 4032, while the sum is 25.

The square root of 72223342 is about 8498.4317376796. The cubic root of 72223342 is about 416.4464780790.

Adding to 72223342 its reverse (24332227), we get a palindrome (96555569).

The spelling of 72223342 in words is "seventy-two million, two hundred twenty-three thousand, three hundred forty-two".