428681334 has 32 divisors (see below), whose sum is σ = 891717120. Its totient is φ = 137266272.

The previous prime is 428681329. The next prime is 428681339. The reversal of 428681334 is 433186824.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (428681329) and next prime (428681339).

It is a super-3 number, since 3×428681334³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 428681292 and 428681301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428681339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5317 + ... + 29759.

It is an arithmetic number, because the mean of its divisors is an integer number (27866160).

Almost surely, 2^428681334 is an apocalyptic number.

428681334 is an abundant number, since it is smaller than the sum of its proper divisors (463035786).

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

428681334 is a wasteful number, since it uses less digits than its factorization.

428681334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24564.

The product of its digits is 110592, while the sum is 39.

The square root of 428681334 is about 20704.6210783970. The cubic root of 428681334 is about 754.0118845559.

The spelling of 428681334 in words is "four hundred twenty-eight million, six hundred eighty-one thousand, three hundred thirty-four".