423062640 has 480 divisors, whose sum is σ = 1910877696. Its totient is φ = 81008640.

The previous prime is 423062623. The next prime is 423062669. The reversal of 423062640 is 46260324.

423062640 is a `hidden beast` number, since 4 + 2 + 30 + 626 + 4 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 720427 + ... + 721013.

Almost surely, 2^423062640 is an apocalyptic number.

423062640 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 423062640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (955438848).

423062640 is an abundant number, since it is smaller than the sum of its proper divisors (1487815056).

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

423062640 is a wasteful number, since it uses less digits than its factorization.

423062640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637 (or 628 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 423062640 is about 20568.4865753414. The cubic root of 423062640 is about 750.7031272767.

The spelling of 423062640 in words is "four hundred twenty-three million, sixty-two thousand, six hundred forty".