71515948 has 12 divisors (see below), whose sum is σ = 143031952. Its totient is φ = 30649680.

The previous prime is 71515937. The next prime is 71515963. The reversal of 71515948 is 84951517.

It is a happy number.

71515948 is an admirable number.

It is a super-2 number, since 2×71515948² = 10229061636677408, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71515948.

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 3 ways as a sum of consecutive naturals, for example, 1277043 + ... + 1277098.

Almost surely, 2^71515948 is an apocalyptic number.

It is an amenable number.

71515948 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

71515948 is a wasteful number, since it uses less digits than its factorization.

71515948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2554152 (or 2554150 counting only the distinct ones).

The product of its digits is 50400, while the sum is 40.

The square root of 71515948 is about 8456.7102350737. The cubic root of 71515948 is about 415.0823816712.

The spelling of 71515948 in words is "seventy-one million, five hundred fifteen thousand, nine hundred forty-eight".