469451640 has 256 divisors, whose sum is σ = 1692472320. Its totient is φ = 101928960.

The previous prime is 469451629. The next prime is 469451641. The reversal of 469451640 is 46154964.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (469451641) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1480762 + ... + 1481078.

It is an arithmetic number, because the mean of its divisors is an integer number (6611220).

Almost surely, 2^469451640 is an apocalyptic number.

469451640 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 469451640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (846236160).

469451640 is an abundant number, since it is smaller than the sum of its proper divisors (1223020680).

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

469451640 is a wasteful number, since it uses less digits than its factorization.

469451640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422 (or 418 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 469451640 is about 21666.8327173124. The cubic root of 469451640 is about 777.1955170204.

The spelling of 469451640 in words is "four hundred sixty-nine million, four hundred fifty-one thousand, six hundred forty".