38720833 has 8 divisors (see below), whose sum is σ = 40136360. Its totient is φ = 37324800.

The previous prime is 38720819. The next prime is 38720837. The reversal of 38720833 is 33802783.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 22496049 + 16224784 = 4743^2 + 4028^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 38720833 - 2²¹ = 36623681 is a prime.

It is a Duffinian number.

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 in 7 ways as a sum of consecutive naturals, for example, 768 + ... + 8833.

It is an arithmetic number, because the mean of its divisors is an integer number (5017045).

Almost surely, 2^38720833 is an apocalyptic number.

It is an amenable number.

38720833 is a deficient number, since it is larger than the sum of its proper divisors (1415527).

38720833 is a wasteful number, since it uses less digits than its factorization.

38720833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9747.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 38720833 is about 6222.6066081667. The cubic root of 38720833 is about 338.3100483596.

The spelling of 38720833 in words is "thirty-eight million, seven hundred twenty thousand, eight hundred thirty-three".