428017755 has 64 divisors (see below), whose sum is σ = 795142656. Its totient is φ = 194304000.

The previous prime is 428017697. The next prime is 428017783. The reversal of 428017755 is 557710824.

428017755 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 428017755 - 2⁷ = 428017627 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 928225 + ... + 928685.

It is an arithmetic number, because the mean of its divisors is an integer number (12424104).

Almost surely, 2^428017755 is an apocalyptic number.

428017755 is a deficient number, since it is larger than the sum of its proper divisors (367124901).

428017755 is a wasteful number, since it uses less digits than its factorization.

428017755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828.

The product of its (nonzero) digits is 78400, while the sum is 39.

The square root of 428017755 is about 20688.5899712861. The cubic root of 428017755 is about 753.6226250555.

The spelling of 428017755 in words is "four hundred twenty-eight million, seventeen thousand, seven hundred fifty-five".