71454920 has 32 divisors (see below), whose sum is σ = 161379000. Its totient is φ = 28474368.

The previous prime is 71454917. The next prime is 71454937. The reversal of 71454920 is 2945417.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 63648484 + 7806436 = 7978^2 + 2794^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7856 + ... + 14304.

Almost surely, 2^71454920 is an apocalyptic number.

It is an amenable number.

71454920 is an abundant number, since it is smaller than the sum of its proper divisors (89924080).

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

71454920 is a wasteful number, since it uses less digits than its factorization.

71454920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6737 (or 6733 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 71454920 is about 8453.1012060663. The cubic root of 71454920 is about 414.9642781465.

The spelling of 71454920 in words is "seventy-one million, four hundred fifty-four thousand, nine hundred twenty".