30748836 has 12 divisors (see below), whose sum is σ = 71747312. Its totient is φ = 10249608.

The previous prime is 30748831. The next prime is 30748871. The reversal of 30748836 is 63884703.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 30748794 and 30748803.

It is not an unprimeable number, because it can be changed into a prime (30748831) 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 in 3 ways as a sum of consecutive naturals, for example, 1281190 + ... + 1281213.

Almost surely, 2^30748836 is an apocalyptic number.

It is an amenable number.

30748836 is an abundant number, since it is smaller than the sum of its proper divisors (40998476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30748836 is a wasteful number, since it uses less digits than its factorization.

30748836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2562410 (or 2562408 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 30748836 is about 5545.1632978660. The cubic root of 30748836 is about 313.2873746787.

The spelling of 30748836 in words is "thirty million, seven hundred forty-eight thousand, eight hundred thirty-six".