71157620 has 24 divisors (see below), whose sum is σ = 151538688. Its totient is φ = 28061600.

The previous prime is 71157613. The next prime is 71157649. The reversal of 71157620 is 2675117.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23636 + ... + 26475.

It is an arithmetic number, because the mean of its divisors is an integer number (6314112).

Almost surely, 2^71157620 is an apocalyptic number.

It is an amenable number.

71157620 is an abundant number, since it is smaller than the sum of its proper divisors (80381068).

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

71157620 is a wasteful number, since it uses less digits than its factorization.

71157620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50191 (or 50189 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 29.

The square root of 71157620 is about 8435.4976142490. The cubic root of 71157620 is about 414.3879689838.

The spelling of 71157620 in words is "seventy-one million, one hundred fifty-seven thousand, six hundred twenty".