71487736 has 16 divisors (see below), whose sum is σ = 138363840. Its totient is φ = 34590720.

The previous prime is 71487707. The next prime is 71487751. The reversal of 71487736 is 63778417.

It is a super-2 number, since 2×71487736² = 10220992796811392, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71487692 and 71487701.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 143881 + ... + 144376.

It is an arithmetic number, because the mean of its divisors is an integer number (8647740).

Almost surely, 2^71487736 is an apocalyptic number.

It is an amenable number.

71487736 is a deficient number, since it is larger than the sum of its proper divisors (66876104).

71487736 is a wasteful number, since it uses less digits than its factorization.

71487736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288294 (or 288290 counting only the distinct ones).

The product of its digits is 197568, while the sum is 43.

The square root of 71487736 is about 8455.0420460220. The cubic root of 71487736 is about 415.0277931742.

It can be divided in two parts, 7148 and 7736, that added together give a square (14884 = 122²).

The spelling of 71487736 in words is "seventy-one million, four hundred eighty-seven thousand, seven hundred thirty-six".