71520014 has 4 divisors (see below), whose sum is σ = 107280024. Its totient is φ = 35760006.

The previous prime is 71520011. The next prime is 71520017. The reversal of 71520014 is 41002517.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (71520011) and next prime (71520017).

It is a super-2 number, since 2×71520014² = 10230224805120392, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71520011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17880002 + ... + 17880005.

It is an arithmetic number, because the mean of its divisors is an integer number (26820006).

Almost surely, 2^71520014 is an apocalyptic number.

71520014 is a deficient number, since it is larger than the sum of its proper divisors (35760010).

71520014 is a wasteful number, since it uses less digits than its factorization.

71520014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35760009.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 71520014 is about 8456.9506324679. The cubic root of 71520014 is about 415.0902479491.

The spelling of 71520014 in words is "seventy-one million, five hundred twenty thousand, fourteen".