428956242 has 64 divisors (see below), whose sum is σ = 1027022976. Its totient is φ = 117711360.

The previous prime is 428956211. The next prime is 428956301. The reversal of 428956242 is 242659824.

It is a junction number, because it is equal to n+sod(n) for n = 428956194 and 428956203.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 40758 + ... + 50190.

It is an arithmetic number, because the mean of its divisors is an integer number (16047234).

Almost surely, 2^428956242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 428956242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (513511488).

428956242 is an abundant number, since it is smaller than the sum of its proper divisors (598066734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

428956242 is a wasteful number, since it uses less digits than its factorization.

428956242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9515.

The product of its digits is 276480, while the sum is 42.

The square root of 428956242 is about 20711.2588221962. The cubic root of 428956242 is about 754.1730295906.

The spelling of 428956242 in words is "four hundred twenty-eight million, nine hundred fifty-six thousand, two hundred forty-two".