75871040 has 56 divisors (see below), whose sum is σ = 206483712. Its totient is φ = 26012160.

The previous prime is 75871021. The next prime is 75871063. The reversal of 75871040 is 4017857.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 75870988 and 75871006.

It is a congruent number.

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, 14696 + ... + 19175.

Almost surely, 2^75871040 is an apocalyptic number.

75871040 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

75871040 is an abundant number, since it is smaller than the sum of its proper divisors (130612672).

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

75871040 is a wasteful number, since it uses less digits than its factorization.

75871040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33895 (or 33885 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 75871040 is about 8710.3983835414. The cubic root of 75871040 is about 423.3426386585.

Adding to 75871040 its reverse (4017857), we get a palindrome (79888897).

The spelling of 75871040 in words is "seventy-five million, eight hundred seventy-one thousand, forty".