428358642 has 16 divisors (see below), whose sum is σ = 857329920. Its totient is φ = 142684112.

The previous prime is 428358641. The next prime is 428358751. The reversal of 428358642 is 246853824.

It is a super-2 number, since 2×428358642² = 366982252352168328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 428358594 and 428358603.

It is not an unprimeable number, because it can be changed into a prime (428358641) 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, 16173 + ... + 33440.

It is an arithmetic number, because the mean of its divisors is an integer number (53583120).

Almost surely, 2^428358642 is an apocalyptic number.

428358642 is an abundant number, since it is smaller than the sum of its proper divisors (428971278).

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

428358642 is a wasteful number, since it uses less digits than its factorization.

428358642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51057.

The product of its digits is 368640, while the sum is 42.

The square root of 428358642 is about 20696.8268582409. The cubic root of 428358642 is about 753.8226416683.

The spelling of 428358642 in words is "four hundred twenty-eight million, three hundred fifty-eight thousand, six hundred forty-two".