71324004 has 24 divisors (see below), whose sum is σ = 169964928. Its totient is φ = 23268640.

The previous prime is 71323991. The next prime is 71324009. The reversal of 71324004 is 40042317.

It is a super-2 number, since 2×71324004² = 10174227093184032, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71324009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62667 + ... + 63794.

It is an arithmetic number, because the mean of its divisors is an integer number (7081872).

Almost surely, 2^71324004 is an apocalyptic number.

It is an amenable number.

71324004 is an abundant number, since it is smaller than the sum of its proper divisors (98640924).

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

71324004 is a wasteful number, since it uses less digits than its factorization.

71324004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126515 (or 126513 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 71324004 is about 8445.3539890285. The cubic root of 71324004 is about 414.7106978720.

The spelling of 71324004 in words is "seventy-one million, three hundred twenty-four thousand, four".