421615296 has 168 divisors, whose sum is σ = 1262790464. Its totient is φ = 134369280.

The previous prime is 421615279. The next prime is 421615297. The reversal of 421615296 is 692516124.

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

It is a self number, because there is not a number n which added to its sum of digits gives 421615296.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421615297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1555641 + ... + 1555911.

Almost surely, 2^421615296 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 421615296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (631395232).

421615296 is an abundant number, since it is smaller than the sum of its proper divisors (841175168).

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

421615296 is a wasteful number, since it uses less digits than its factorization.

421615296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399 (or 386 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 421615296 is about 20533.2729003440. The cubic root of 421615296 is about 749.8460697428.

The spelling of 421615296 in words is "four hundred twenty-one million, six hundred fifteen thousand, two hundred ninety-six".