38077721 has 8 divisors (see below), whose sum is σ = 41614464. Its totient is φ = 34553520.

The previous prime is 38077709. The next prime is 38077727. The reversal of 38077721 is 12777083.

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 38077721 - 2¹⁸ = 37815577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38077727) 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, 3920 + ... + 9566.

It is an arithmetic number, because the mean of its divisors is an integer number (5201808).

Almost surely, 2^38077721 is an apocalyptic number.

It is an amenable number.

38077721 is a deficient number, since it is larger than the sum of its proper divisors (3536743).

38077721 is a wasteful number, since it uses less digits than its factorization.

38077721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6271.

The product of its (nonzero) digits is 16464, while the sum is 35.

The square root of 38077721 is about 6170.7147884180. The cubic root of 38077721 is about 336.4265916893.

The spelling of 38077721 in words is "thirty-eight million, seventy-seven thousand, seven hundred twenty-one".