30673281 has 16 divisors (see below), whose sum is σ = 42006528. Its totient is φ = 19899600.

The previous prime is 30673241. The next prime is 30673309. The reversal of 30673281 is 18237603.

It is not a de Polignac number, because 30673281 - 2⁹ = 30672769 is a prime.

It is a super-2 number, since 2×30673281² = 1881700334609922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30673211) 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, 29236 + ... + 30266.

It is an arithmetic number, because the mean of its divisors is an integer number (2625408).

Almost surely, 2^30673281 is an apocalyptic number.

It is an amenable number.

30673281 is a deficient number, since it is larger than the sum of its proper divisors (11333247).

30673281 is a wasteful number, since it uses less digits than its factorization.

30673281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 30673281 is about 5538.3464138676. The cubic root of 30673281 is about 313.0305645077.

The spelling of 30673281 in words is "thirty million, six hundred seventy-three thousand, two hundred eighty-one".