421367652 has 72 divisors (see below), whose sum is σ = 1083045600. Its totient is φ = 138112128.

The previous prime is 421367647. The next prime is 421367663. The reversal of 421367652 is 256763124.

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

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, 1111599 + ... + 1111977.

It is an arithmetic number, because the mean of its divisors is an integer number (15042300).

Almost surely, 2^421367652 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421367652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (541522800).

421367652 is an abundant number, since it is smaller than the sum of its proper divisors (661677948).

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

421367652 is a wasteful number, since it uses less digits than its factorization.

421367652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825 (or 820 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 421367652 is about 20527.2417046227. The cubic root of 421367652 is about 749.6992287316.

The spelling of 421367652 in words is "four hundred twenty-one million, three hundred sixty-seven thousand, six hundred fifty-two".