71056020 has 48 divisors (see below), whose sum is σ = 227380608. Its totient is φ = 16241280.

The previous prime is 71055989. The next prime is 71056049. The reversal of 71056020 is 2065017.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

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, 84171 + ... + 85010.

It is an arithmetic number, because the mean of its divisors is an integer number (4737096).

Almost surely, 2^71056020 is an apocalyptic number.

71056020 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

71056020 is an abundant number, since it is smaller than the sum of its proper divisors (156324588).

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

71056020 is a wasteful number, since it uses less digits than its factorization.

71056020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169200 (or 169198 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 71056020 is about 8429.4732931542. The cubic root of 71056020 is about 414.1906517630.

The spelling of 71056020 in words is "seventy-one million, fifty-six thousand, twenty".