471902640 has 160 divisors (see below), whose sum is σ = 1633395456. Its totient is φ = 111713280.

The previous prime is 471902621. The next prime is 471902647. The reversal of 471902640 is 46209174.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (471902647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 111442 + ... + 115598.

Almost surely, 2^471902640 is an apocalyptic number.

471902640 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 471902640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (816697728).

471902640 is an abundant number, since it is smaller than the sum of its proper divisors (1161492816).

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

471902640 is a wasteful number, since it uses less digits than its factorization.

471902640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4227 (or 4221 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 471902640 is about 21723.3201882217. The cubic root of 471902640 is about 778.5457452941.

The spelling of 471902640 in words is "four hundred seventy-one million, nine hundred two thousand, six hundred forty".