421562880 has 400 divisors, whose sum is σ = 1604227680. Its totient is φ = 105504768.

The previous prime is 421562863. The next prime is 421562917. The reversal of 421562880 is 88265124.

421562880 is a `hidden beast` number, since 4 + 21 + 5 + 628 + 8 + 0 = 666.

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

It is a nialpdrome in base 12.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3939787 + ... + 3939893.

Almost surely, 2^421562880 is an apocalyptic number.

421562880 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 421562880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (802113840).

421562880 is an abundant number, since it is smaller than the sum of its proper divisors (1182664800).

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

421562880 is a wasteful number, since it uses less digits than its factorization.

421562880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 421562880 is about 20531.9964932785. The cubic root of 421562880 is about 749.8149943676.

The spelling of 421562880 in words is "four hundred twenty-one million, five hundred sixty-two thousand, eight hundred eighty".