857703040 has 128 divisors (see below), whose sum is σ = 2241976320. Its totient is φ = 312360960.

The previous prime is 857703037. The next prime is 857703107. The reversal of 857703040 is 40307758.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 857702987 and 857703005.

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, 336009 + ... + 338551.

It is an arithmetic number, because the mean of its divisors is an integer number (17515440).

Almost surely, 2^857703040 is an apocalyptic number.

857703040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 857703040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1120988160).

857703040 is an abundant number, since it is smaller than the sum of its proper divisors (1384273280).

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

857703040 is a wasteful number, since it uses less digits than its factorization.

857703040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2610 (or 2598 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 857703040 is about 29286.5675694507. The cubic root of 857703040 is about 950.1211442924.

The spelling of 857703040 in words is "eight hundred fifty-seven million, seven hundred three thousand, forty".