71115954 has 96 divisors (see below), whose sum is σ = 186157440. Its totient is φ = 17918208.

The previous prime is 71115929. The next prime is 71115973. The reversal of 71115954 is 45951117.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 87502 + ... + 88310.

It is an arithmetic number, because the mean of its divisors is an integer number (1939140).

Almost surely, 2^71115954 is an apocalyptic number.

71115954 is the 4508-th nonagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71115954, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93078720).

71115954 is an abundant number, since it is smaller than the sum of its proper divisors (115041486).

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

71115954 is a wasteful number, since it uses less digits than its factorization.

71115954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864 (or 857 counting only the distinct ones).

The product of its digits is 6300, while the sum is 33.

The square root of 71115954 is about 8433.0275702146. The cubic root of 71115954 is about 414.3070722356.

The spelling of 71115954 in words is "seventy-one million, one hundred fifteen thousand, nine hundred fifty-four".