428473216 has 16 divisors (see below), whose sum is σ = 853599240. Its totient is φ = 214236544.

The previous prime is 428473183. The next prime is 428473249. The reversal of 428473216 is 612374824.

It is an interprime number because it is at equal distance from previous prime (428473183) and next prime (428473249).

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1673596 + ... + 1673851.

Almost surely, 2^428473216 is an apocalyptic number.

It is an amenable number.

428473216 is a deficient number, since it is larger than the sum of its proper divisors (425126024).

428473216 is an equidigital number, since it uses as much as digits as its factorization.

428473216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3347461 (or 3347449 counting only the distinct ones).

The product of its digits is 64512, while the sum is 37.

The square root of 428473216 is about 20699.5945854019. The cubic root of 428473216 is about 753.8898445272.

The spelling of 428473216 in words is "four hundred twenty-eight million, four hundred seventy-three thousand, two hundred sixteen".