72331262 has 4 divisors (see below), whose sum is σ = 108496896. Its totient is φ = 36165630.

The previous prime is 72331229. The next prime is 72331267. The reversal of 72331262 is 26213327.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 26213327 = 7 ⋅3744761.

It is a super-2 number, since 2×72331262² = 10463622925025288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72331267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18082814 + ... + 18082817.

It is an arithmetic number, because the mean of its divisors is an integer number (27124224).

Almost surely, 2^72331262 is an apocalyptic number.

72331262 is a deficient number, since it is larger than the sum of its proper divisors (36165634).

72331262 is a wasteful number, since it uses less digits than its factorization.

72331262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36165633.

The product of its digits is 3024, while the sum is 26.

The square root of 72331262 is about 8504.7787743127. The cubic root of 72331262 is about 416.6538004205.

Adding to 72331262 its reverse (26213327), we get a palindrome (98544589).

The spelling of 72331262 in words is "seventy-two million, three hundred thirty-one thousand, two hundred sixty-two".