426415572 has 72 divisors (see below), whose sum is σ = 1180539360. Its totient is φ = 128704320.

The previous prime is 426415543. The next prime is 426415579. The reversal of 426415572 is 275514624.

It is a happy number.

426415572 is a `hidden beast` number, since 4 + 2 + 641 + 5 + 5 + 7 + 2 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426415579) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 104523 + ... + 108525.

It is an arithmetic number, because the mean of its divisors is an integer number (16396380).

Almost surely, 2^426415572 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 426415572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (590269680).

426415572 is an abundant number, since it is smaller than the sum of its proper divisors (754123788).

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

426415572 is a wasteful number, since it uses less digits than its factorization.

426415572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4293 (or 4288 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 426415572 is about 20649.8322511346. The cubic root of 426415572 is about 752.6811134202.

The spelling of 426415572 in words is "four hundred twenty-six million, four hundred fifteen thousand, five hundred seventy-two".