71303970 has 32 divisors (see below), whose sum is σ = 171383040. Its totient is φ = 18986240.

The previous prime is 71303963. The next prime is 71303993. The reversal of 71303970 is 7930317.

It is a super-2 number, since 2×71303970² = 10168512275521800, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 26026 + ... + 28634.

It is an arithmetic number, because the mean of its divisors is an integer number (5355720).

Almost surely, 2^71303970 is an apocalyptic number.

71303970 is an abundant number, since it is smaller than the sum of its proper divisors (100079070).

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

71303970 is a wasteful number, since it uses less digits than its factorization.

71303970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3530.

The product of its (nonzero) digits is 3969, while the sum is 30.

The square root of 71303970 is about 8444.1678097963. The cubic root of 71303970 is about 414.6718652599.

The spelling of 71303970 in words is "seventy-one million, three hundred three thousand, nine hundred seventy".