30272738 has 24 divisors (see below), whose sum is σ = 50035968. Its totient is φ = 13708728.

The previous prime is 30272701. The next prime is 30272743. The reversal of 30272738 is 83727203.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15695 + ... + 17517.

It is an arithmetic number, because the mean of its divisors is an integer number (2084832).

Almost surely, 2^30272738 is an apocalyptic number.

30272738 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

30272738 is a deficient number, since it is larger than the sum of its proper divisors (19763230).

30272738 is a wasteful number, since it uses less digits than its factorization.

30272738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1886 (or 1867 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 30272738 is about 5502.0667026128. The cubic root of 30272738 is about 311.6620340502.

The spelling of 30272738 in words is "thirty million, two hundred seventy-two thousand, seven hundred thirty-eight".