38457143 has 4 divisors (see below), whose sum is σ = 39697728. Its totient is φ = 37216560.

The previous prime is 38457131. The next prime is 38457151. The reversal of 38457143 is 34175483.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 38457143 - 2¹² = 38453047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38457163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 620246 + ... + 620307.

It is an arithmetic number, because the mean of its divisors is an integer number (9924432).

Almost surely, 2^38457143 is an apocalyptic number.

38457143 is a deficient number, since it is larger than the sum of its proper divisors (1240585).

38457143 is a wasteful number, since it uses less digits than its factorization.

38457143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1240584.

The product of its digits is 40320, while the sum is 35.

The square root of 38457143 is about 6201.3823458968. The cubic root of 38457143 is about 337.5403313485.

The spelling of 38457143 in words is "thirty-eight million, four hundred fifty-seven thousand, one hundred forty-three".