71983426 has 16 divisors (see below), whose sum is σ = 114474240. Its totient is φ = 33888240.

The previous prime is 71983411. The next prime is 71983433. The reversal of 71983426 is 62438917.

It is a super-2 number, since 2×71983426² = 10363227237394952, which contains 22 as substring.

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, 13396 + ... + 17983.

It is an arithmetic number, because the mean of its divisors is an integer number (7154640).

Almost surely, 2^71983426 is an apocalyptic number.

71983426 is a deficient number, since it is larger than the sum of its proper divisors (42490814).

71983426 is a wasteful number, since it uses less digits than its factorization.

71983426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31449.

The product of its digits is 72576, while the sum is 40.

The square root of 71983426 is about 8484.3046857123. The cubic root of 71983426 is about 415.9848405780.

The spelling of 71983426 in words is "seventy-one million, nine hundred eighty-three thousand, four hundred twenty-six".