71703828 has 36 divisors (see below), whose sum is σ = 207145120. Its totient is φ = 20486736.

The previous prime is 71703799. The next prime is 71703871. The reversal of 71703828 is 82830717.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a junction number, because it is equal to n+sod(n) for n = 71703792 and 71703801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142018 + ... + 142521.

Almost surely, 2^71703828 is an apocalyptic number.

It is an amenable number.

71703828 is an abundant number, since it is smaller than the sum of its proper divisors (135441292).

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

71703828 is a wasteful number, since it uses less digits than its factorization.

71703828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284556 (or 284551 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 71703828 is about 8467.8112874579. The cubic root of 71703828 is about 415.4455523453.

The spelling of 71703828 in words is "seventy-one million, seven hundred three thousand, eight hundred twenty-eight".