385577540 has 48 divisors (see below), whose sum is σ = 820157184. Its totient is φ = 152256000.

The previous prime is 385577537. The next prime is 385577557. The reversal of 385577540 is 45775583.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 385577491 and 385577500.

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, 961340 + ... + 961740.

It is an arithmetic number, because the mean of its divisors is an integer number (17086608).

Almost surely, 2^385577540 is an apocalyptic number.

It is an amenable number.

385577540 is an abundant number, since it is smaller than the sum of its proper divisors (434579644).

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

385577540 is a wasteful number, since it uses less digits than its factorization.

385577540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908 (or 906 counting only the distinct ones).

The product of its (nonzero) digits is 588000, while the sum is 44.

The square root of 385577540 is about 19636.1284371436. The cubic root of 385577540 is about 727.8422176472.

The spelling of 385577540 in words is "three hundred eighty-five million, five hundred seventy-seven thousand, five hundred forty".