30755420 has 12 divisors (see below), whose sum is σ = 64586424. Its totient is φ = 12302160.

The previous prime is 30755419. The next prime is 30755429. The reversal of 30755420 is 2455703.

It is a self number, because there is not a number n which added to its sum of digits gives 30755420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30755429) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 768866 + ... + 768905.

It is an arithmetic number, because the mean of its divisors is an integer number (5382202).

Almost surely, 2^30755420 is an apocalyptic number.

It is an amenable number.

30755420 is an abundant number, since it is smaller than the sum of its proper divisors (33831004).

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

30755420 is a wasteful number, since it uses less digits than its factorization.

30755420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1537780 (or 1537778 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 30755420 is about 5545.7569366138. The cubic root of 30755420 is about 313.3097336483.

The spelling of 30755420 in words is "thirty million, seven hundred fifty-five thousand, four hundred twenty".