71223982 has 16 divisors (see below), whose sum is σ = 113877792. Its totient is φ = 33292800.

The previous prime is 71223967. The next prime is 71224009. The reversal of 71223982 is 28932217.

It is a super-2 number, since 2×71223982² = 10145711223872648, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1803 + ... + 12070.

It is an arithmetic number, because the mean of its divisors is an integer number (7117362).

Almost surely, 2^71223982 is an apocalyptic number.

71223982 is a deficient number, since it is larger than the sum of its proper divisors (42653810).

71223982 is a wasteful number, since it uses less digits than its factorization.

71223982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14043.

The product of its digits is 12096, while the sum is 34.

The square root of 71223982 is about 8439.4301940356. The cubic root of 71223982 is about 414.5167491485.

The spelling of 71223982 in words is "seventy-one million, two hundred twenty-three thousand, nine hundred eighty-two".