30761880 has 32 divisors (see below), whose sum is σ = 92286000. Its totient is φ = 8203136.

The previous prime is 30761867. The next prime is 30761909. The reversal of 30761880 is 8816703.

It is a super-2 number, since 2×30761880² = 1892586522268800, which contains 22 as substring.

It is a congruent number.

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, 128055 + ... + 128294.

Almost surely, 2^30761880 is an apocalyptic number.

30761880 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30761880 is an abundant number, since it is smaller than the sum of its proper divisors (61524120).

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

30761880 is a wasteful number, since it uses less digits than its factorization.

30761880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256363 (or 256359 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 30761880 is about 5546.3393332900. The cubic root of 30761880 is about 313.3316684183.

The spelling of 30761880 in words is "thirty million, seven hundred sixty-one thousand, eight hundred eighty".