71512048 has 40 divisors (see below), whose sum is σ = 148065920. Its totient is φ = 33359040.

The previous prime is 71512033. The next prime is 71512079. The reversal of 71512048 is 84021517.

It is a super-2 number, since 2×71512048² = 10227946018308608, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18613 + ... + 22123.

It is an arithmetic number, because the mean of its divisors is an integer number (3701648).

Almost surely, 2^71512048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71512048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74032960).

71512048 is an abundant number, since it is smaller than the sum of its proper divisors (76553872).

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

71512048 is a wasteful number, since it uses less digits than its factorization.

71512048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3605 (or 3599 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 71512048 is about 8456.4796458101. The cubic root of 71512048 is about 415.0748362646.

The spelling of 71512048 in words is "seventy-one million, five hundred twelve thousand, forty-eight".