385525440 has 112 divisors (see below), whose sum is σ = 1360078560. Its totient is φ = 102804480.

The previous prime is 385525421. The next prime is 385525453. The reversal of 385525440 is 44525583.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 385525395 and 385525404.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13671 + ... + 30950.

Almost surely, 2^385525440 is an apocalyptic number.

385525440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

385525440 is an abundant number, since it is smaller than the sum of its proper divisors (974553120).

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

385525440 is a wasteful number, since it uses less digits than its factorization.

385525440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44647 (or 44631 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

The square root of 385525440 is about 19634.8017560657. The cubic root of 385525440 is about 727.8094336771.

It can be divided in two parts, 385 and 525440, that added together give a triangular number (525825 = T₁₀₂₅).

The spelling of 385525440 in words is "three hundred eighty-five million, five hundred twenty-five thousand, four hundred forty".