428629019 has 24 divisors (see below), whose sum is σ = 555503760. Its totient is φ = 327426624.

The previous prime is 428629013. The next prime is 428629027. The reversal of 428629019 is 910926824.

It is not a de Polignac number, because 428629019 - 2⁸ = 428628763 is a prime.

It is a super-2 number, since 2×428629019² = 367445671857804722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (428629013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6872 + ... + 30074.

It is an arithmetic number, because the mean of its divisors is an integer number (23145990).

Almost surely, 2^428629019 is an apocalyptic number.

428629019 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

428629019 is a deficient number, since it is larger than the sum of its proper divisors (126874741).

428629019 is a wasteful number, since it uses less digits than its factorization.

428629019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23259 (or 23252 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 428629019 is about 20703.3576745416. The cubic root of 428629019 is about 753.9812108492.

The spelling of 428629019 in words is "four hundred twenty-eight million, six hundred twenty-nine thousand, nineteen".