30662421 has 4 divisors (see below), whose sum is σ = 40883232. Its totient is φ = 20441612.

The previous prime is 30662399. The next prime is 30662431. The reversal of 30662421 is 12426603.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30662421 - 2⁵ = 30662389 is a prime.

It is a super-3 number, since 3×30662421³ (a number of 23 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30662391 and 30662400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30662431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5110401 + ... + 5110406.

It is an arithmetic number, because the mean of its divisors is an integer number (10220808).

Almost surely, 2^30662421 is an apocalyptic number.

It is an amenable number.

30662421 is a deficient number, since it is larger than the sum of its proper divisors (10220811).

30662421 is a wasteful number, since it uses less digits than its factorization.

30662421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10220810.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 30662421 is about 5537.3658900239. The cubic root of 30662421 is about 312.9936168983.

The spelling of 30662421 in words is "thirty million, six hundred sixty-two thousand, four hundred twenty-one".