428941238 has 16 divisors (see below), whose sum is σ = 702576720. Its totient is φ = 194786400.

The previous prime is 428941231. The next prime is 428941273. The reversal of 428941238 is 832149824.

It is a junction number, because it is equal to n+sod(n) for n = 428941195 and 428941204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428941231) 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, 15608 + ... + 33188.

It is an arithmetic number, because the mean of its divisors is an integer number (43911045).

Almost surely, 2^428941238 is an apocalyptic number.

428941238 is a deficient number, since it is larger than the sum of its proper divisors (273635482).

428941238 is a wasteful number, since it uses less digits than its factorization.

428941238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18703.

The product of its digits is 110592, while the sum is 41.

The square root of 428941238 is about 20710.8966005820. The cubic root of 428941238 is about 754.1642363518.

The spelling of 428941238 in words is "four hundred twenty-eight million, nine hundred forty-one thousand, two hundred thirty-eight".