71258040 has 96 divisors (see below), whose sum is σ = 264682080. Its totient is φ = 16286976.

The previous prime is 71258029. The next prime is 71258053. The reversal of 71258040 is 4085217.

71258040 = 904² + 905² + ... + 983².

It is a junction number, because it is equal to n+sod(n) for n = 71257995 and 71258013.

It is a congruent number.

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, 11619 + ... + 16658.

It is an arithmetic number, because the mean of its divisors is an integer number (2757105).

Almost surely, 2^71258040 is an apocalyptic number.

71258040 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

71258040 is an abundant number, since it is smaller than the sum of its proper divisors (193424040).

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

71258040 is a wasteful number, since it uses less digits than its factorization.

71258040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28301 (or 28294 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 71258040 is about 8441.4477431303. The cubic root of 71258040 is about 414.5828100518.

The spelling of 71258040 in words is "seventy-one million, two hundred fifty-eight thousand, forty".