38540457 has 6 divisors (see below), whose sum is σ = 55669562. Its totient is φ = 25693632.

The previous prime is 38540443. The next prime is 38540459. The reversal of 38540457 is 75404583.

It can be written as a sum of positive squares in only one way, i.e., 34292736 + 4247721 = 5856^2 + 2061^2 .

It is not a de Polignac number, because 38540457 - 2¹⁰ = 38539433 is a prime.

It is a super-3 number, since 3×38540457³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38540459) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2141128 + ... + 2141145.

Almost surely, 2^38540457 is an apocalyptic number.

It is an amenable number.

38540457 is a deficient number, since it is larger than the sum of its proper divisors (17129105).

38540457 is a wasteful number, since it uses less digits than its factorization.

38540457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4282279 (or 4282276 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 38540457 is about 6208.0960849523. The cubic root of 38540457 is about 337.7839059665.

The spelling of 38540457 in words is "thirty-eight million, five hundred forty thousand, four hundred fifty-seven".