38720037 has 8 divisors (see below), whose sum is σ = 52397536. Its totient is φ = 25427952.

The previous prime is 38720021. The next prime is 38720041. The reversal of 38720037 is 73002783.

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

It is not a de Polignac number, because 38720037 - 2⁴ = 38720021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38719986 and 38720013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38720047) 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, 96118 + ... + 96519.

It is an arithmetic number, because the mean of its divisors is an integer number (6549692).

Almost surely, 2^38720037 is an apocalyptic number.

It is an amenable number.

38720037 is a deficient number, since it is larger than the sum of its proper divisors (13677499).

38720037 is a wasteful number, since it uses less digits than its factorization.

38720037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192707.

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 38720037 is about 6222.5426475035. The cubic root of 38720037 is about 338.3077300844.

The spelling of 38720037 in words is "thirty-eight million, seven hundred twenty thousand, thirty-seven".