492651640 has 32 divisors (see below), whose sum is σ = 1193734080. Its totient is φ = 181901952.

The previous prime is 492651631. The next prime is 492651661. The reversal of 492651640 is 46156294.

It is a self number, because there is not a number n which added to its sum of digits gives 492651640.

It is a congruent number.

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, 473184 + ... + 474223.

It is an arithmetic number, because the mean of its divisors is an integer number (37304190).

Almost surely, 2^492651640 is an apocalyptic number.

492651640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

492651640 is an abundant number, since it is smaller than the sum of its proper divisors (701082440).

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

492651640 is a wasteful number, since it uses less digits than its factorization.

492651640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947431 (or 947427 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 492651640 is about 22195.7572522318. The cubic root of 492651640 is about 789.7930558733.

It can be divided in two parts, 49265 and 1640, that added together give a palindrome (50905).

The spelling of 492651640 in words is "four hundred ninety-two million, six hundred fifty-one thousand, six hundred forty".