428401677 has 8 divisors (see below), whose sum is σ = 623129760. Its totient is φ = 259637360.

The previous prime is 428401667. The next prime is 428401681. The reversal of 428401677 is 776104824.

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

It is a cyclic number.

It is not a de Polignac number, because 428401677 - 2⁶ = 428401613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428401637) 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, 6490902 + ... + 6490967.

It is an arithmetic number, because the mean of its divisors is an integer number (77891220).

Almost surely, 2^428401677 is an apocalyptic number.

It is an amenable number.

428401677 is a deficient number, since it is larger than the sum of its proper divisors (194728083).

428401677 is a wasteful number, since it uses less digits than its factorization.

428401677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12981883.

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 428401677 is about 20697.8664842539. The cubic root of 428401677 is about 753.8478850570.

The spelling of 428401677 in words is "four hundred twenty-eight million, four hundred one thousand, six hundred seventy-seven".