38705457 has 8 divisors (see below), whose sum is σ = 58979776. Its totient is φ = 22117392.

The previous prime is 38705449. The next prime is 38705467. The reversal of 38705457 is 75450783.

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

It is not a de Polignac number, because 38705457 - 2³ = 38705449 is a prime.

It is a super-2 number, since 2×38705457² = 2996224803157698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38705417) 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, 921538 + ... + 921579.

It is an arithmetic number, because the mean of its divisors is an integer number (7372472).

Almost surely, 2^38705457 is an apocalyptic number.

It is an amenable number.

38705457 is a deficient number, since it is larger than the sum of its proper divisors (20274319).

38705457 is a wasteful number, since it uses less digits than its factorization.

38705457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1843127.

The product of its (nonzero) digits is 117600, while the sum is 39.

The square root of 38705457 is about 6221.3709903847. The cubic root of 38705457 is about 338.2652615820.

The spelling of 38705457 in words is "thirty-eight million, seven hundred five thousand, four hundred fifty-seven".