38405761 has 8 divisors (see below), whose sum is σ = 39299904. Its totient is φ = 37518000.

The previous prime is 38405753. The next prime is 38405767. The reversal of 38405761 is 16750483.

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 38405761 - 2³ = 38405753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38405767) 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, 11860 + ... + 14746.

It is an arithmetic number, because the mean of its divisors is an integer number (4912488).

Almost surely, 2^38405761 is an apocalyptic number.

It is an amenable number.

38405761 is a deficient number, since it is larger than the sum of its proper divisors (894143).

38405761 is a wasteful number, since it uses less digits than its factorization.

38405761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3191.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 38405761 is about 6197.2381751874. The cubic root of 38405761 is about 337.3899368589.

The spelling of 38405761 in words is "thirty-eight million, four hundred five thousand, seven hundred sixty-one".