474644640 has 96 divisors (see below), whose sum is σ = 1514177280. Its totient is φ = 124959744.

The previous prime is 474644633. The next prime is 474644647. The reversal of 474644640 is 46446474.

It is an interprime number because it is at equal distance from previous prime (474644633) and next prime (474644647).

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (474644647) 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, 31662 + ... + 44178.

It is an arithmetic number, because the mean of its divisors is an integer number (15772680).

Almost surely, 2^474644640 is an apocalyptic number.

474644640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 474644640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (757088640).

474644640 is an abundant number, since it is smaller than the sum of its proper divisors (1039532640).

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

474644640 is a wasteful number, since it uses less digits than its factorization.

474644640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12614 (or 12606 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 39.

The square root of 474644640 is about 21786.3406748357. The cubic root of 474644640 is about 780.0507527791.

The spelling of 474644640 in words is "four hundred seventy-four million, six hundred forty-four thousand, six hundred forty".