71428170 has 64 divisors (see below), whose sum is σ = 187951104. Its totient is φ = 17229120.

The previous prime is 71428157. The next prime is 71428183. The reversal of 71428170 is 7182417.

It is an interprime number because it is at equal distance from previous prime (71428157) and next prime (71428183).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86379 + ... + 87201.

It is an arithmetic number, because the mean of its divisors is an integer number (2936736).

Almost surely, 2^71428170 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71428170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93975552).

71428170 is an abundant number, since it is smaller than the sum of its proper divisors (116522934).

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

71428170 is a wasteful number, since it uses less digits than its factorization.

71428170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107.

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 71428170 is about 8451.5187984172. The cubic root of 71428170 is about 414.9124894108.

The spelling of 71428170 in words is "seventy-one million, four hundred twenty-eight thousand, one hundred seventy".