894642840 has 256 divisors, whose sum is σ = 3670732800. Its totient is φ = 188739072.

The previous prime is 894642823. The next prime is 894642841. The reversal of 894642840 is 48246498.

It is a super-2 number, since 2×894642840² = 1600771622326531200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (894642841) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 93729 + ... + 102831.

It is an arithmetic number, because the mean of its divisors is an integer number (14338800).

Almost surely, 2^894642840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 894642840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1835366400).

894642840 is an abundant number, since it is smaller than the sum of its proper divisors (2776089960).

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

894642840 is a wasteful number, since it uses less digits than its factorization.

894642840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9143 (or 9133 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 45.

The square root of 894642840 is about 29910.5807365889. The cubic root of 894642840 is about 963.5699113911.

The spelling of 894642840 in words is "eight hundred ninety-four million, six hundred forty-two thousand, eight hundred forty".