71376540 has 192 divisors, whose sum is σ = 232243200. Its totient is φ = 16257024.

The previous prime is 71376499. The next prime is 71376551. The reversal of 71376540 is 4567317.

It is a super-2 number, since 2×71376540² = 10189220924743200, which contains 22 as substring.

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 63 ways as a sum of consecutive naturals, for example, 561957 + ... + 562083.

It is an arithmetic number, because the mean of its divisors is an integer number (1209600).

Almost surely, 2^71376540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71376540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116121600).

71376540 is an abundant number, since it is smaller than the sum of its proper divisors (160866660).

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

71376540 is a wasteful number, since it uses less digits than its factorization.

71376540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 33.

The square root of 71376540 is about 8448.4637656795. The cubic root of 71376540 is about 414.8124957373.

The spelling of 71376540 in words is "seventy-one million, three hundred seventy-six thousand, five hundred forty".