428229916 has 24 divisors (see below), whose sum is σ = 789594624. Its totient is φ = 202812720.

The previous prime is 428229887. The next prime is 428229941. The reversal of 428229916 is 619922824.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13120 + ... + 32071.

It is an arithmetic number, because the mean of its divisors is an integer number (32899776).

Almost surely, 2^428229916 is an apocalyptic number.

428229916 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

428229916 is a deficient number, since it is larger than the sum of its proper divisors (361364708).

428229916 is a wasteful number, since it uses less digits than its factorization.

428229916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45321 (or 45319 counting only the distinct ones).

The product of its digits is 124416, while the sum is 43.

The square root of 428229916 is about 20693.7168241957. The cubic root of 428229916 is about 753.7471237218.

The spelling of 428229916 in words is "four hundred twenty-eight million, two hundred twenty-nine thousand, nine hundred sixteen".