30281229 has 16 divisors (see below), whose sum is σ = 48939840. Its totient is φ = 18352080.

The previous prime is 30281227. The next prime is 30281261. The reversal of 30281229 is 92218203.

It is a happy number.

It is not a de Polignac number, because 30281229 - 2¹ = 30281227 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30281227) 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, 50682 + ... + 51275.

It is an arithmetic number, because the mean of its divisors is an integer number (3058740).

Almost surely, 2^30281229 is an apocalyptic number.

It is an amenable number.

30281229 is a deficient number, since it is larger than the sum of its proper divisors (18658611).

30281229 is a wasteful number, since it uses less digits than its factorization.

30281229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101977 (or 101971 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 30281229 is about 5502.8382676579. The cubic root of 30281229 is about 311.6911700004.

The spelling of 30281229 in words is "thirty million, two hundred eighty-one thousand, two hundred twenty-nine".