71190972 has 36 divisors (see below), whose sum is σ = 184143960. Its totient is φ = 23177952.

The previous prime is 71190971. The next prime is 71190989. The reversal of 71190972 is 27909117.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71190971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21447 + ... + 24542.

It is an arithmetic number, because the mean of its divisors is an integer number (5115110).

Almost surely, 2^71190972 is an apocalyptic number.

It is an amenable number.

71190972 is an abundant number, since it is smaller than the sum of its proper divisors (112952988).

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

71190972 is a wasteful number, since it uses less digits than its factorization.

71190972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46042 (or 46037 counting only the distinct ones).

The product of its (nonzero) digits is 7938, while the sum is 36.

The square root of 71190972 is about 8437.4742666274. The cubic root of 71190972 is about 414.4527009072.

The spelling of 71190972 in words is "seventy-one million, one hundred ninety thousand, nine hundred seventy-two".