30101428 has 24 divisors (see below), whose sum is σ = 60828992. Its totient is φ = 12766464.

The previous prime is 30101399. The next prime is 30101429. The reversal of 30101428 is 82410103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30101429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2826 + ... + 8257.

Almost surely, 2^30101428 is an apocalyptic number.

It is an amenable number.

30101428 is an abundant number, since it is smaller than the sum of its proper divisors (30727564).

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

30101428 is a wasteful number, since it uses less digits than its factorization.

30101428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11191 (or 11189 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 30101428 is about 5486.4768294416. The cubic root of 30101428 is about 311.0730348904.

The spelling of 30101428 in words is "thirty million, one hundred one thousand, four hundred twenty-eight".