71004924 has 60 divisors (see below), whose sum is σ = 190669864. Its totient is φ = 23024736.

The previous prime is 71004883. The next prime is 71004931. The reversal of 71004924 is 42940017.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9027 + ... + 14949.

Almost surely, 2^71004924 is an apocalyptic number.

71004924 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71004924, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95334932).

71004924 is an abundant number, since it is smaller than the sum of its proper divisors (119664940).

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

71004924 is a wasteful number, since it uses less digits than its factorization.

71004924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5976 (or 5965 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 71004924 is about 8426.4419537549. The cubic root of 71004924 is about 414.0913472030.

The spelling of 71004924 in words is "seventy-one million, four thousand, nine hundred twenty-four".