72224838 has 32 divisors (see below), whose sum is σ = 183429120. Its totient is φ = 20635560.

The previous prime is 72224837. The next prime is 72224839. The reversal of 72224838 is 83842227.

It is an interprime number because it is at equal distance from previous prime (72224837) and next prime (72224839).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72224837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95158 + ... + 95913.

It is an arithmetic number, because the mean of its divisors is an integer number (5732160).

Almost surely, 2^72224838 is an apocalyptic number.

72224838 is an abundant number, since it is smaller than the sum of its proper divisors (111204282).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72224838 is a wasteful number, since it uses less digits than its factorization.

72224838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191089 (or 191083 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 72224838 is about 8498.5197534630. The cubic root of 72224838 is about 416.4493534174.

The spelling of 72224838 in words is "seventy-two million, two hundred twenty-four thousand, eight hundred thirty-eight".