423951840 has 192 divisors, whose sum is σ = 1598184000. Its totient is φ = 104343552.

The previous prime is 423951821. The next prime is 423951851. The reversal of 423951840 is 48159324.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 423951795 and 423951804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52386 + ... + 59934.

It is an arithmetic number, because the mean of its divisors is an integer number (8323875).

Almost surely, 2^423951840 is an apocalyptic number.

423951840 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 423951840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (799092000).

423951840 is an abundant number, since it is smaller than the sum of its proper divisors (1174232160).

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

423951840 is a wasteful number, since it uses less digits than its factorization.

423951840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7586 (or 7572 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 423951840 is about 20590.0908205865. The cubic root of 423951840 is about 751.2287059430.

The spelling of 423951840 in words is "four hundred twenty-three million, nine hundred fifty-one thousand, eight hundred forty".