71401750 has 32 divisors (see below), whose sum is σ = 152762688. Its totient is φ = 24480000.

The previous prime is 71401747. The next prime is 71401777. The reversal of 71401750 is 5710417.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18651 + ... + 22150.

It is an arithmetic number, because the mean of its divisors is an integer number (4773834).

Almost surely, 2^71401750 is an apocalyptic number.

71401750 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

71401750 is an abundant number, since it is smaller than the sum of its proper divisors (81360938).

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

71401750 is a wasteful number, since it uses less digits than its factorization.

71401750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40825 (or 40815 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 25.

The square root of 71401750 is about 8449.9556211852. The cubic root of 71401750 is about 414.8613268709.

The spelling of 71401750 in words is "seventy-one million, four hundred one thousand, seven hundred fifty".