720000038 has 4 divisors (see below), whose sum is σ = 1080000060. Its totient is φ = 360000018.

The previous prime is 719999999. The next prime is 720000049. The reversal of 720000038 is 830000027.

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 = 719999974 and 720000019.

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, 180000008 + ... + 180000011.

It is an arithmetic number, because the mean of its divisors is an integer number (270000015).

Almost surely, 2^720000038 is an apocalyptic number.

720000038 is a deficient number, since it is larger than the sum of its proper divisors (360000022).

720000038 is a wasteful number, since it uses less digits than its factorization.

720000038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360000021.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 720000038 is about 26832.8164380857. The cubic root of 720000038 is about 896.2809650793.

The spelling of 720000038 in words is "seven hundred twenty million, thirty-eight", and thus it is an aban number.