8720038 has 4 divisors (see below), whose sum is σ = 13080060. Its totient is φ = 4360018.

The previous prime is 8720027. The next prime is 8720057. The reversal of 8720038 is 8300278.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 8719988 and 8720015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2180008 + ... + 2180011.

It is an arithmetic number, because the mean of its divisors is an integer number (3270015).

Almost surely, 2^8720038 is an apocalyptic number.

8720038 is a deficient number, since it is larger than the sum of its proper divisors (4360022).

8720038 is a wasteful number, since it uses less digits than its factorization.

8720038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4360021.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 8720038 is about 2952.9710462516. The cubic root of 8720038 is about 205.8287923002.

The spelling of 8720038 in words is "eight million, seven hundred twenty thousand, thirty-eight".