72032938 has 4 divisors (see below), whose sum is σ = 108049410. Its totient is φ = 36016468.

The previous prime is 72032929. The next prime is 72032953. The reversal of 72032938 is 83923027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83923027 = 431 ⋅194717.

It can be written as a sum of positive squares in only one way, i.e., 42732369 + 29300569 = 6537^2 + 5413^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 18008233 + ... + 18008236.

Almost surely, 2^72032938 is an apocalyptic number.

72032938 is a deficient number, since it is larger than the sum of its proper divisors (36016472).

72032938 is a wasteful number, since it uses less digits than its factorization.

72032938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36016471.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 72032938 is about 8487.2220425767. Note that the first 3 decimals coincide. The cubic root of 72032938 is about 416.0801936436.

The spelling of 72032938 in words is "seventy-two million, thirty-two thousand, nine hundred thirty-eight".