30138651 has 12 divisors (see below), whose sum is σ = 43691128. Its totient is φ = 20019744.

The previous prime is 30138629. The next prime is 30138659. The reversal of 30138651 is 15683103.

30138651 is a `hidden beast` number, since 3 + 0 + 1 + 3 + 8 + 651 = 666.

It is not a de Polignac number, because 30138651 - 2⁷ = 30138523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30138659) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3370 + ... + 8463.

Almost surely, 2^30138651 is an apocalyptic number.

30138651 is a deficient number, since it is larger than the sum of its proper divisors (13552477).

30138651 is a wasteful number, since it uses less digits than its factorization.

30138651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12122 (or 12119 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 30138651 is about 5489.8680312008. The cubic root of 30138651 is about 311.2012049118.

It can be divided in two parts, 3013 and 8651, that added together give a square (11664 = 108²).

The spelling of 30138651 in words is "thirty million, one hundred thirty-eight thousand, six hundred fifty-one".