385271761 has 12 divisors (see below), whose sum is σ = 450436800. Its totient is φ = 328565160.

The previous prime is 385271749. The next prime is 385271779. The reversal of 385271761 is 167172583.

It is not a de Polignac number, because 385271761 - 2⁷ = 385271633 is a prime.

It is a super-2 number, since 2×385271761² = 296868659648082242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (385271741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10005 + ... + 29506.

It is an arithmetic number, because the mean of its divisors is an integer number (37536400).

Almost surely, 2^385271761 is an apocalyptic number.

It is an amenable number.

385271761 is a deficient number, since it is larger than the sum of its proper divisors (65165039).

385271761 is a wasteful number, since it uses less digits than its factorization.

385271761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39724 (or 39717 counting only the distinct ones).

The product of its digits is 70560, while the sum is 40.

The square root of 385271761 is about 19628.3407602375. The cubic root of 385271761 is about 727.6497637297.

The spelling of 385271761 in words is "three hundred eighty-five million, two hundred seventy-one thousand, seven hundred sixty-one".