30103072 has 12 divisors (see below), whose sum is σ = 59265486. Its totient is φ = 15051520.

The previous prime is 30103063. The next prime is 30103079. The reversal of 30103072 is 27030103.

It can be written as a sum of positive squares in only one way, i.e., 22240656 + 7862416 = 4716^2 + 2804^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (30103079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 470329 + ... + 470392.

Almost surely, 2^30103072 is an apocalyptic number.

30103072 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

30103072 is a deficient number, since it is larger than the sum of its proper divisors (29162414).

30103072 is an equidigital number, since it uses as much as digits as its factorization.

30103072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940731 (or 940723 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 16.

The square root of 30103072 is about 5486.6266503198. The cubic root of 30103072 is about 311.0786979081.

Adding to 30103072 its reverse (27030103), we get a palindrome (57133175).

The spelling of 30103072 in words is "thirty million, one hundred three thousand, seventy-two".