385457872 has 10 divisors (see below), whose sum is σ = 746824658. Its totient is φ = 192728928.

The previous prime is 385457861. The next prime is 385457873. The reversal of 385457872 is 278754583.

It can be written as a sum of positive squares in only one way, i.e., 380094016 + 5363856 = 19496^2 + 2316^2 .

It is a super-4 number, since 4×385457872⁴ (a number of 35 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385457873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12045543 + ... + 12045574.

Almost surely, 2^385457872 is an apocalyptic number.

It is an amenable number.

385457872 is a deficient number, since it is larger than the sum of its proper divisors (361366786).

385457872 is a wasteful number, since it uses less digits than its factorization.

385457872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24091125 (or 24091119 counting only the distinct ones).

The product of its digits is 1881600, while the sum is 49.

The square root of 385457872 is about 19633.0810623295. The cubic root of 385457872 is about 727.7669120552.

The spelling of 385457872 in words is "three hundred eighty-five million, four hundred fifty-seven thousand, eight hundred seventy-two".