30428451 has 12 divisors (see below), whose sum is σ = 44208528. Its totient is φ = 20167344.

The previous prime is 30428449. The next prime is 30428459. The reversal of 30428451 is 15482403.

It is not a de Polignac number, because 30428451 - 2¹ = 30428449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30428459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8215 + ... + 11328.

It is an arithmetic number, because the mean of its divisors is an integer number (3684044).

Almost surely, 2^30428451 is an apocalyptic number.

30428451 is a deficient number, since it is larger than the sum of its proper divisors (13780077).

30428451 is a wasteful number, since it uses less digits than its factorization.

30428451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19722 (or 19719 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 30428451 is about 5516.1989630542. The cubic root of 30428451 is about 312.1954827713.

The spelling of 30428451 in words is "thirty million, four hundred twenty-eight thousand, four hundred fifty-one".