30780554 has 16 divisors (see below), whose sum is σ = 52843200. Its totient is φ = 13172544.

The previous prime is 30780527. The next prime is 30780587. The reversal of 30780554 is 45508703.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 30780554.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13037 + ... + 15215.

It is an arithmetic number, because the mean of its divisors is an integer number (3302700).

Almost surely, 2^30780554 is an apocalyptic number.

30780554 is a deficient number, since it is larger than the sum of its proper divisors (22062646).

30780554 is a wasteful number, since it uses less digits than its factorization.

30780554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3197.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 30780554 is about 5548.0225305959. The cubic root of 30780554 is about 313.3950582587.

The spelling of 30780554 in words is "thirty million, seven hundred eighty thousand, five hundred fifty-four".