30630261 has 8 divisors (see below), whose sum is σ = 42989920. Its totient is φ = 19345392.

The previous prime is 30630253. The next prime is 30630269. The reversal of 30630261 is 16203603.

It is an interprime number because it is at equal distance from previous prime (30630253) and next prime (30630269).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30630261 - 2³ = 30630253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30630269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268630 + ... + 268743.

It is an arithmetic number, because the mean of its divisors is an integer number (5373740).

Almost surely, 2^30630261 is an apocalyptic number.

It is an amenable number.

30630261 is a deficient number, since it is larger than the sum of its proper divisors (12359659).

30630261 is a wasteful number, since it uses less digits than its factorization.

30630261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537395.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 30630261 is about 5534.4612203899. The cubic root of 30630261 is about 312.8841517875.

Adding to 30630261 its reverse (16203603), we get a palindrome (46833864).

The spelling of 30630261 in words is "thirty million, six hundred thirty thousand, two hundred sixty-one".