71964450 has 72 divisors (see below), whose sum is σ = 200539248. Its totient is φ = 19187280.

The previous prime is 71964449. The next prime is 71964463. The reversal of 71964450 is 5446917.

71964450 is a `hidden beast` number, since 7 + 1 + 9 + 644 + 5 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9189 + ... + 15111.

Almost surely, 2^71964450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71964450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100269624).

71964450 is an abundant number, since it is smaller than the sum of its proper divisors (128574798).

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

71964450 is a wasteful number, since it uses less digits than its factorization.

71964450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5950 (or 5933 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 71964450 is about 8483.1863117581. The cubic root of 71964450 is about 415.9482839125.

The spelling of 71964450 in words is "seventy-one million, nine hundred sixty-four thousand, four hundred fifty".