385389270 has 48 divisors (see below), whose sum is σ = 1145158560. Its totient is φ = 88088832.

The previous prime is 385389227. The next prime is 385389271. The reversal of 385389270 is 72983583.

It is a super-2 number, since 2×385389270² = 297049778862265800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385389271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 305235 + ... + 306494.

It is an arithmetic number, because the mean of its divisors is an integer number (23857470).

Almost surely, 2^385389270 is an apocalyptic number.

385389270 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

385389270 is an abundant number, since it is smaller than the sum of its proper divisors (759769290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

385389270 is a wasteful number, since it uses less digits than its factorization.

385389270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611749 (or 611746 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 385389270 is about 19631.3338823423. Note that the first 3 decimals coincide. The cubic root of 385389270 is about 727.7237346364.

The spelling of 385389270 in words is "three hundred eighty-five million, three hundred eighty-nine thousand, two hundred seventy".