428043957 has 16 divisors (see below), whose sum is σ = 624360960. Its totient is φ = 258690800.

The previous prime is 428043937. The next prime is 428043991. The reversal of 428043957 is 759340824.

It is a cyclic number.

It is not a de Polignac number, because 428043957 - 2¹⁰ = 428042933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428043907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6219 + ... + 29912.

It is an arithmetic number, because the mean of its divisors is an integer number (39022560).

Almost surely, 2^428043957 is an apocalyptic number.

It is an amenable number.

428043957 is a deficient number, since it is larger than the sum of its proper divisors (196317003).

428043957 is a wasteful number, since it uses less digits than its factorization.

428043957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36504.

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 428043957 is about 20689.2232091976. The cubic root of 428043957 is about 753.6380029355.

The spelling of 428043957 in words is "four hundred twenty-eight million, forty-three thousand, nine hundred fifty-seven".