491675240 has 64 divisors (see below), whose sum is σ = 1298505600. Its totient is φ = 164014848.

The previous prime is 491675237. The next prime is 491675243. The reversal of 491675240 is 42576194.

It is an interprime number because it is at equal distance from previous prime (491675237) and next prime (491675243).

It is a junction number, because it is equal to n+sod(n) for n = 491675194 and 491675203.

It is not an unprimeable number, because it can be changed into a prime (491675243) 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, 13370 + ... + 34089.

It is an arithmetic number, because the mean of its divisors is an integer number (20289150).

Almost surely, 2^491675240 is an apocalyptic number.

491675240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

491675240 is an abundant number, since it is smaller than the sum of its proper divisors (806830360).

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

491675240 is a wasteful number, since it uses less digits than its factorization.

491675240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47514 (or 47510 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 491675240 is about 22173.7511485991. The cubic root of 491675240 is about 789.2709398411.

The spelling of 491675240 in words is "four hundred ninety-one million, six hundred seventy-five thousand, two hundred forty".