71675040 has 48 divisors (see below), whose sum is σ = 225777888. Its totient is φ = 19113216.

The previous prime is 71675017. The next prime is 71675057. The reversal of 71675040 is 4057617.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×71675040² = 10274622718003200, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 71674989 and 71675007.

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, 74182 + ... + 75141.

It is an arithmetic number, because the mean of its divisors is an integer number (4703706).

Almost surely, 2^71675040 is an apocalyptic number.

It is an amenable number.

71675040 is an abundant number, since it is smaller than the sum of its proper divisors (154102848).

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

71675040 is a wasteful number, since it uses less digits than its factorization.

71675040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149341 (or 149333 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 71675040 is about 8466.1112678726. Note that the first 3 decimals coincide. The cubic root of 71675040 is about 415.3899465392.

The spelling of 71675040 in words is "seventy-one million, six hundred seventy-five thousand, forty".