30275421 has 16 divisors (see below), whose sum is σ = 44129280. Its totient is φ = 18310320.

The previous prime is 30275393. The next prime is 30275423. The reversal of 30275421 is 12457203.

It is not a de Polignac number, because 30275421 - 2⁵ = 30275389 is a prime.

It is a super-2 number, since 2×30275421² = 1833202233454482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30275391 and 30275400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30275423) 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, 28620 + ... + 29658.

It is an arithmetic number, because the mean of its divisors is an integer number (2758080).

Almost surely, 2^30275421 is an apocalyptic number.

It is an amenable number.

30275421 is a deficient number, since it is larger than the sum of its proper divisors (13853859).

30275421 is a wasteful number, since it uses less digits than its factorization.

30275421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1936.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 30275421 is about 5502.3105146838. The cubic root of 30275421 is about 311.6712410639.

It can be divided in two parts, 3027 and 5421, that added together give a palindrome (8448).

The spelling of 30275421 in words is "thirty million, two hundred seventy-five thousand, four hundred twenty-one".