71532870 has 32 divisors (see below), whose sum is σ = 174497760. Its totient is φ = 18762240.

The previous prime is 71532869. The next prime is 71532871. The reversal of 71532870 is 7823517.

It is an interprime number because it is at equal distance from previous prime (71532869) and next prime (71532871).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71532871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17715 + ... + 21374.

It is an arithmetic number, because the mean of its divisors is an integer number (5453055).

Almost surely, 2^71532870 is an apocalyptic number.

71532870 is an abundant number, since it is smaller than the sum of its proper divisors (102964890).

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

71532870 is a wasteful number, since it uses less digits than its factorization.

71532870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39160.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 71532870 is about 8457.7106831577. The cubic root of 71532870 is about 415.1151178199.

The spelling of 71532870 in words is "seventy-one million, five hundred thirty-two thousand, eight hundred seventy".