30428617428 has 72 divisors (see below), whose sum is σ = 84090953856. Its totient is φ = 9200822400.

The previous prime is 30428617399. The next prime is 30428617469. The reversal of 30428617428 is 82471682403.

It is a happy number.

30428617428 is a `hidden beast` number, since 3 + 0 + 4 + 2 + 8 + 617 + 4 + 28 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 100368 + ... + 266328.

Almost surely, 2^30428617428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30428617428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42045476928).

30428617428 is an abundant number, since it is smaller than the sum of its proper divisors (53662336428).

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

30428617428 is a wasteful number, since it uses less digits than its factorization.

30428617428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166445 (or 166440 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The spelling of 30428617428 in words is "thirty billion, four hundred twenty-eight million, six hundred seventeen thousand, four hundred twenty-eight".