71443692 has 18 divisors (see below), whose sum is σ = 180593868. Its totient is φ = 23814552.

The previous prime is 71443657. The next prime is 71443693. The reversal of 71443692 is 29634417.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×71443692² = 10208402253181728, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1984547 = 71443692 / (7 + 1 + 4 + 4 + 3 + 6 + 9 + 2).

It is not an unprimeable number, because it can be changed into a prime (71443693) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 992238 + ... + 992309.

Almost surely, 2^71443692 is an apocalyptic number.

It is an amenable number.

71443692 is an abundant number, since it is smaller than the sum of its proper divisors (109150176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71443692 is a wasteful number, since it uses less digits than its factorization.

71443692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1984557 (or 1984552 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 71443692 is about 8452.4370450184. The cubic root of 71443692 is about 414.9425420040.

The spelling of 71443692 in words is "seventy-one million, four hundred forty-three thousand, six hundred ninety-two".