72138062 has 4 divisors (see below), whose sum is σ = 108207096. Its totient is φ = 36069030.

The previous prime is 72138043. The next prime is 72138071. The reversal of 72138062 is 26083127.

It is a happy number.

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

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, 18034514 + ... + 18034517.

It is an arithmetic number, because the mean of its divisors is an integer number (27051774).

Almost surely, 2^72138062 is an apocalyptic number.

72138062 is a deficient number, since it is larger than the sum of its proper divisors (36069034).

72138062 is a wasteful number, since it uses less digits than its factorization.

72138062 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36069033.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 72138062 is about 8493.4128593870. The cubic root of 72138062 is about 416.2825027300.

It can be divided in two parts, 721 and 38062, that added together give a palindrome (38783).

The spelling of 72138062 in words is "seventy-two million, one hundred thirty-eight thousand, sixty-two".