30749504 has 14 divisors (see below), whose sum is σ = 61018674. Its totient is φ = 15374720.

The previous prime is 30749491. The next prime is 30749507. The reversal of 30749504 is 40594703.

It can be written as a sum of positive squares in only one way, i.e., 30030400 + 719104 = 5480^2 + 848^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30749507) 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, 240167 + ... + 240294.

Almost surely, 2^30749504 is an apocalyptic number.

It is an amenable number.

30749504 is a deficient number, since it is larger than the sum of its proper divisors (30269170).

30749504 is an equidigital number, since it uses as much as digits as its factorization.

30749504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480473 (or 480463 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 30749504 is about 5545.2235302105. The cubic root of 30749504 is about 313.2896433223.

The spelling of 30749504 in words is "thirty million, seven hundred forty-nine thousand, five hundred four".