385074840 has 32 divisors (see below), whose sum is σ = 1155224880. Its totient is φ = 102686592.

The previous prime is 385074821. The next prime is 385074841. The reversal of 385074840 is 48470583.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385074841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1604359 + ... + 1604598.

Almost surely, 2^385074840 is an apocalyptic number.

385074840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

385074840 is an abundant number, since it is smaller than the sum of its proper divisors (770150040).

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

385074840 is a wasteful number, since it uses less digits than its factorization.

385074840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3208971 (or 3208967 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 39.

The square root of 385074840 is about 19623.3238774679. The cubic root of 385074840 is about 727.5257699212.

The spelling of 385074840 in words is "three hundred eighty-five million, seventy-four thousand, eight hundred forty".