428269656 has 32 divisors (see below), whose sum is σ = 1071486000. Its totient is φ = 142648320.

The previous prime is 428269643. The next prime is 428269669. The reversal of 428269656 is 656962824.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (428269643) and next prime (428269669).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29520 + ... + 41568.

Almost surely, 2^428269656 is an apocalyptic number.

It is an amenable number.

428269656 is an abundant number, since it is smaller than the sum of its proper divisors (643216344).

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

428269656 is a wasteful number, since it uses less digits than its factorization.

428269656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13539 (or 13535 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 48.

The square root of 428269656 is about 20694.6769967545. The cubic root of 428269656 is about 753.7704390663.

The spelling of 428269656 in words is "four hundred twenty-eight million, two hundred sixty-nine thousand, six hundred fifty-six".