30742880 has 48 divisors (see below), whose sum is σ = 83008800. Its totient is φ = 10540032.

The previous prime is 30742879. The next prime is 30742897. The reversal of 30742880 is 8824703.

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

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 12605 + ... + 14844.

It is an arithmetic number, because the mean of its divisors is an integer number (1729350).

Almost surely, 2^30742880 is an apocalyptic number.

It is an amenable number.

30742880 is an abundant number, since it is smaller than the sum of its proper divisors (52265920).

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

30742880 is a wasteful number, since it uses less digits than its factorization.

30742880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27471 (or 27463 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 30742880 is about 5544.6262272582. The cubic root of 30742880 is about 313.2671456193.

The spelling of 30742880 in words is "thirty million, seven hundred forty-two thousand, eight hundred eighty".