30454021 has 16 divisors (see below), whose sum is σ = 35583408. Its totient is φ = 25804800.

The previous prime is 30454007. The next prime is 30454037. The reversal of 30454021 is 12045403.

It can be written as a sum of positive squares in 8 ways, for example, as 1185921 + 29268100 = 1089^2 + 5410^2 .

It is a cyclic number.

It is not a de Polignac number, because 30454021 - 2⁵ = 30453989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30454021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30454051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7381 + ... + 10741.

It is an arithmetic number, because the mean of its divisors is an integer number (2223963).

Almost surely, 2^30454021 is an apocalyptic number.

It is an amenable number.

30454021 is a deficient number, since it is larger than the sum of its proper divisors (5129387).

30454021 is a wasteful number, since it uses less digits than its factorization.

30454021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3432.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 30454021 is about 5518.5161955004. The cubic root of 30454021 is about 312.2829075684.

Adding to 30454021 its reverse (12045403), we get a palindrome (42499424).

It can be divided in two parts, 3045402 and 1, that added together give a palindrome (3045403).

The spelling of 30454021 in words is "thirty million, four hundred fifty-four thousand, twenty-one".