71638030 has 8 divisors (see below), whose sum is σ = 128948472. Its totient is φ = 28655208.

The previous prime is 71638027. The next prime is 71638057. The reversal of 71638030 is 3083617.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 71638030.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3581892 + ... + 3581911.

It is an arithmetic number, because the mean of its divisors is an integer number (16118559).

Almost surely, 2^71638030 is an apocalyptic number.

71638030 is a deficient number, since it is larger than the sum of its proper divisors (57310442).

71638030 is a wasteful number, since it uses less digits than its factorization.

71638030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7163810.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 71638030 is about 8463.9252123350. The cubic root of 71638030 is about 415.3184375509.

The spelling of 71638030 in words is "seventy-one million, six hundred thirty-eight thousand, thirty".