428037657 has 8 divisors (see below), whose sum is σ = 573585600. Its totient is φ = 283924080.

The previous prime is 428037637. The next prime is 428037661. The reversal of 428037657 is 756730824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 428037657 - 2¹⁰ = 428036633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (428037637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 357894 + ... + 359087.

It is an arithmetic number, because the mean of its divisors is an integer number (71698200).

Almost surely, 2^428037657 is an apocalyptic number.

It is an amenable number.

428037657 is a deficient number, since it is larger than the sum of its proper divisors (145547943).

428037657 is a wasteful number, since it uses less digits than its factorization.

428037657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717183.

The product of its (nonzero) digits is 282240, while the sum is 42.

The square root of 428037657 is about 20689.0709554586. The cubic root of 428037657 is about 753.6343055406.

The spelling of 428037657 in words is "four hundred twenty-eight million, thirty-seven thousand, six hundred fifty-seven".