72438422 has 16 divisors (see below), whose sum is σ = 124319232. Its totient is φ = 31010280.

The previous prime is 72438419. The next prime is 72438427. The reversal of 72438422 is 22483427.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72438427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13097 + ... + 17787.

It is an arithmetic number, because the mean of its divisors is an integer number (7769952).

Almost surely, 2^72438422 is an apocalyptic number.

72438422 is a deficient number, since it is larger than the sum of its proper divisors (51880810).

72438422 is a wasteful number, since it uses less digits than its factorization.

72438422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5803.

The product of its digits is 21504, while the sum is 32.

The square root of 72438422 is about 8511.0764301585. The cubic root of 72438422 is about 416.8594587989.

The spelling of 72438422 in words is "seventy-two million, four hundred thirty-eight thousand, four hundred twenty-two".