30428453 has 32 divisors (see below), whose sum is σ = 37739520. Its totient is φ = 24192000.

The previous prime is 30428449. The next prime is 30428459. The reversal of 30428453 is 35482403.

It is a cyclic number.

It is not a de Polignac number, because 30428453 - 2² = 30428449 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 168023 + ... + 168203.

It is an arithmetic number, because the mean of its divisors is an integer number (1179360).

Almost surely, 2^30428453 is an apocalyptic number.

It is an amenable number.

30428453 is a deficient number, since it is larger than the sum of its proper divisors (7311067).

30428453 is a wasteful number, since it uses less digits than its factorization.

30428453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 30428453 is about 5516.1991443384. The cubic root of 30428453 is about 312.1954896113.

The spelling of 30428453 in words is "thirty million, four hundred twenty-eight thousand, four hundred fifty-three".