72207838 has 8 divisors (see below), whose sum is σ = 108598680. Its totient is φ = 36008280.

The previous prime is 72207827. The next prime is 72207853. The reversal of 72207838 is 83870227.

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 = 72207797 and 72207806.

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, 46873 + ... + 48388.

It is an arithmetic number, because the mean of its divisors is an integer number (13574835).

Almost surely, 2^72207838 is an apocalyptic number.

72207838 is a deficient number, since it is larger than the sum of its proper divisors (36390842).

72207838 is a wasteful number, since it uses less digits than its factorization.

72207838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95642.

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 72207838 is about 8497.5195204248. The cubic root of 72207838 is about 416.4166767799.

The spelling of 72207838 in words is "seventy-two million, two hundred seven thousand, eight hundred thirty-eight".