853854640 has 40 divisors (see below), whose sum is σ = 2027459520. Its totient is φ = 334273536.

The previous prime is 853854629. The next prime is 853854671. The reversal of 853854640 is 46458358.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109785 + ... + 117304.

It is an arithmetic number, because the mean of its divisors is an integer number (50686488).

Almost surely, 2^853854640 is an apocalyptic number.

853854640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

853854640 is an abundant number, since it is smaller than the sum of its proper divisors (1173604880).

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

853854640 is a wasteful number, since it uses less digits than its factorization.

853854640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227149 (or 227143 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 43.

The square root of 853854640 is about 29220.7912281649. The cubic root of 853854640 is about 948.6979910654.

The spelling of 853854640 in words is "eight hundred fifty-three million, eight hundred fifty-four thousand, six hundred forty".