71292620 has 48 divisors (see below), whose sum is σ = 171893568. Its totient is φ = 24330240.

The previous prime is 71292569. The next prime is 71292631. The reversal of 71292620 is 2629217.

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, 32684 + ... + 34796.

It is an arithmetic number, because the mean of its divisors is an integer number (3581116).

Almost surely, 2^71292620 is an apocalyptic number.

71292620 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71292620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85946784).

71292620 is an abundant number, since it is smaller than the sum of its proper divisors (100600948).

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

71292620 is a wasteful number, since it uses less digits than its factorization.

71292620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2370 (or 2368 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 71292620 is about 8443.4957215599. The cubic root of 71292620 is about 414.6498619249.

The spelling of 71292620 in words is "seventy-one million, two hundred ninety-two thousand, six hundred twenty".