894036640 has 96 divisors (see below), whose sum is σ = 2541006720. Its totient is φ = 290386944.

The previous prime is 894036623. The next prime is 894036643. The reversal of 894036640 is 46630498.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 894036593 and 894036602.

It is not an unprimeable number, because it can be changed into a prime (894036643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 274 + ... + 42286.

It is an arithmetic number, because the mean of its divisors is an integer number (26468820).

Almost surely, 2^894036640 is an apocalyptic number.

894036640 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 894036640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1270503360).

894036640 is an abundant number, since it is smaller than the sum of its proper divisors (1646970080).

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

894036640 is a wasteful number, since it uses less digits than its factorization.

894036640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42054 (or 42046 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 894036640 is about 29900.4454816312. The cubic root of 894036640 is about 963.3522274790.

The spelling of 894036640 in words is "eight hundred ninety-four million, thirty-six thousand, six hundred forty".