71158890 has 48 divisors (see below), whose sum is σ = 187727904. Its totient is φ = 17249760.

The previous prime is 71158877. The next prime is 71158921. The reversal of 71158890 is 9885117.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6172 + ... + 13431.

It is an arithmetic number, because the mean of its divisors is an integer number (3910998).

Almost surely, 2^71158890 is an apocalyptic number.

71158890 is an abundant number, since it is smaller than the sum of its proper divisors (116569014).

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

71158890 is a wasteful number, since it uses less digits than its factorization.

71158890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19635 (or 19624 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 39.

The square root of 71158890 is about 8435.5728910371. The cubic root of 71158890 is about 414.3904342601.

The spelling of 71158890 in words is "seventy-one million, one hundred fifty-eight thousand, eight hundred ninety".