854640930 has 128 divisors (see below), whose sum is σ = 2443633920. Its totient is φ = 188559360.

The previous prime is 854640929. The next prime is 854640931. The reversal of 854640930 is 39046458.

It is an interprime number because it is at equal distance from previous prime (854640929) and next prime (854640931).

It is a super-2 number, since 2×854640930² = 1460822238462529800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (854640931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 311806 + ... + 314534.

It is an arithmetic number, because the mean of its divisors is an integer number (19090890).

Almost surely, 2^854640930 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 854640930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1221816960).

854640930 is an abundant number, since it is smaller than the sum of its proper divisors (1588992990).

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

854640930 is a wasteful number, since it uses less digits than its factorization.

854640930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2836.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 854640930 is about 29234.2424222007. The cubic root of 854640930 is about 948.9891112203.

The spelling of 854640930 in words is "eight hundred fifty-four million, six hundred forty thousand, nine hundred thirty".