71743772 has 24 divisors (see below), whose sum is σ = 132741840. Its totient is φ = 33834240.

The previous prime is 71743769. The next prime is 71743787. The reversal of 71743772 is 27734717.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

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, 16358 + ... + 20274.

It is an arithmetic number, because the mean of its divisors is an integer number (5530910).

Almost surely, 2^71743772 is an apocalyptic number.

It is an amenable number.

71743772 is a deficient number, since it is larger than the sum of its proper divisors (60998068).

71743772 is a wasteful number, since it uses less digits than its factorization.

71743772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4181 (or 4179 counting only the distinct ones).

The product of its digits is 57624, while the sum is 38.

The square root of 71743772 is about 8470.1695378546. The cubic root of 71743772 is about 415.5226820101.

The spelling of 71743772 in words is "seventy-one million, seven hundred forty-three thousand, seven hundred seventy-two".