428926671 has 20 divisors (see below), whose sum is σ = 643520592. Its totient is φ = 284711328.

The previous prime is 428926657. The next prime is 428926703. The reversal of 428926671 is 176629824.

It is a happy number.

It is not a de Polignac number, because 428926671 - 2¹⁸ = 428664527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428926601) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7510 + ... + 30236.

Almost surely, 2^428926671 is an apocalyptic number.

428926671 is a deficient number, since it is larger than the sum of its proper divisors (214593921).

428926671 is a wasteful number, since it uses less digits than its factorization.

428926671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22972 (or 22963 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 428926671 is about 20710.5449228165. The cubic root of 428926671 is about 754.1556990248.

The spelling of 428926671 in words is "four hundred twenty-eight million, nine hundred twenty-six thousand, six hundred seventy-one".