855040428 has 48 divisors (see below), whose sum is σ = 2418299520. Its totient is φ = 259102800.

The previous prime is 855040411. The next prime is 855040453. The reversal of 855040428 is 824040558.

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 = 855040392 and 855040401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 358678 + ... + 361053.

It is an arithmetic number, because the mean of its divisors is an integer number (50381240).

Almost surely, 2^855040428 is an apocalyptic number.

It is an amenable number.

855040428 is an abundant number, since it is smaller than the sum of its proper divisors (1563259092).

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

855040428 is a wasteful number, since it uses less digits than its factorization.

855040428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719755 (or 719747 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 36.

The square root of 855040428 is about 29241.0743304688. The cubic root of 855040428 is about 949.1369550619.

The spelling of 855040428 in words is "eight hundred fifty-five million, forty thousand, four hundred twenty-eight".