38720834 has 4 divisors (see below), whose sum is σ = 58081254. Its totient is φ = 19360416.

The previous prime is 38720819. The next prime is 38720837. The reversal of 38720834 is 43802783.

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

It can be written as a sum of positive squares in only one way, i.e., 20205025 + 18515809 = 4495^2 + 4303^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 38720794 and 38720803.

It is not an unprimeable number, because it can be changed into a prime (38720837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9680207 + ... + 9680210.

Almost surely, 2^38720834 is an apocalyptic number.

38720834 is a deficient number, since it is larger than the sum of its proper divisors (19360420).

38720834 is a wasteful number, since it uses less digits than its factorization.

38720834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19360419.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 38720834 is about 6222.6066885189. The cubic root of 38720834 is about 338.3100512720.

The spelling of 38720834 in words is "thirty-eight million, seven hundred twenty thousand, eight hundred thirty-four".