71428464 has 60 divisors (see below), whose sum is σ = 206361792. Its totient is φ = 23040000.

The previous prime is 71428453. The next prime is 71428481. The reversal of 71428464 is 46482417.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3537 + ... + 12464.

Almost surely, 2^71428464 is an apocalyptic number.

It is an amenable number.

71428464 is an abundant number, since it is smaller than the sum of its proper divisors (134933328).

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

71428464 is a wasteful number, since it uses less digits than its factorization.

71428464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16046 (or 16037 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 71428464 is about 8451.5361917228. The cubic root of 71428464 is about 414.9130586732.

The spelling of 71428464 in words is "seventy-one million, four hundred twenty-eight thousand, four hundred sixty-four".