1385024928 has 48 divisors (see below), whose sum is σ = 4155076800. Its totient is φ = 395721216.

The previous prime is 1385024917. The next prime is 1385024933. The reversal of 1385024928 is 8294205831.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 1385024928.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1029853 + ... + 1031196.

It is an arithmetic number, because the mean of its divisors is an integer number (86564100).

Almost surely, 2^1385024928 is an apocalyptic number.

It is an amenable number.

1385024928 is an abundant number, since it is smaller than the sum of its proper divisors (2770051872).

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

1385024928 is a wasteful number, since it uses less digits than its factorization.

1385024928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2061069 (or 2061061 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 1385024928 is about 37215.9230437725. The cubic root of 1385024928 is about 1114.6859573925.

The spelling of 1385024928 in words is "one billion, three hundred eighty-five million, twenty-four thousand, nine hundred twenty-eight".