426640152 has 32 divisors (see below), whose sum is σ = 1091407680. Its totient is φ = 138905760.

The previous prime is 426640139. The next prime is 426640153. The reversal of 426640152 is 251046624.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426640153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205674 + ... + 207737.

It is an arithmetic number, because the mean of its divisors is an integer number (34106490).

Almost surely, 2^426640152 is an apocalyptic number.

It is an amenable number.

426640152 is an abundant number, since it is smaller than the sum of its proper divisors (664767528).

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

426640152 is a wasteful number, since it uses less digits than its factorization.

426640152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413463 (or 413459 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 426640152 is about 20655.2693519111. The cubic root of 426640152 is about 752.8132282464.

Adding to 426640152 its reverse (251046624), we get a palindrome (677686776).

The spelling of 426640152 in words is "four hundred twenty-six million, six hundred forty thousand, one hundred fifty-two".