428274330 has 64 divisors (see below), whose sum is σ = 1129603968. Its totient is φ = 103055360.

The previous prime is 428274323. The next prime is 428274337. The reversal of 428274330 is 33472824.

It is an interprime number because it is at equal distance from previous prime (428274323) and next prime (428274337).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 428274291 and 428274300.

It is not an unprimeable number, because it can be changed into a prime (428274337) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40474 + ... + 49946.

It is an arithmetic number, because the mean of its divisors is an integer number (17650062).

Almost surely, 2^428274330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 428274330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (564801984).

428274330 is an abundant number, since it is smaller than the sum of its proper divisors (701329638).

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

428274330 is a wasteful number, since it uses less digits than its factorization.

428274330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9631.

The product of its (nonzero) digits is 32256, while the sum is 33.

The square root of 428274330 is about 20694.7899240364. The cubic root of 428274330 is about 753.7731811940.

The spelling of 428274330 in words is "four hundred twenty-eight million, two hundred seventy-four thousand, three hundred thirty".