421817088 has 216 divisors, whose sum is σ = 1426057920. Its totient is φ = 109455360.

The previous prime is 421817051. The next prime is 421817129. The reversal of 421817088 is 880718124.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 413443 + ... + 414461.

It is an arithmetic number, because the mean of its divisors is an integer number (6602120).

Almost surely, 2^421817088 is an apocalyptic number.

421817088 is a gapful number since it is divisible by the number (48) 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 421817088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (713028960).

421817088 is an abundant number, since it is smaller than the sum of its proper divisors (1004240832).

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

421817088 is a wasteful number, since it uses less digits than its factorization.

421817088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063 (or 1042 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 39.

The square root of 421817088 is about 20538.1860932264. The cubic root of 421817088 is about 749.9656802073.

It can be divided in two parts, 42 and 1817088, that multiplied together give a square (76317696 = 8736²).

The spelling of 421817088 in words is "four hundred twenty-one million, eight hundred seventeen thousand, eighty-eight".