30047980 has 24 divisors (see below), whose sum is σ = 63257040. Its totient is φ = 11989440.

The previous prime is 30047971. The next prime is 30048001. The reversal of 30047980 is 8974003.

It is a happy number.

It is a super-2 number, since 2×30047980² = 1805762204160800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7591 + ... + 10849.

It is an arithmetic number, because the mean of its divisors is an integer number (2635710).

Almost surely, 2^30047980 is an apocalyptic number.

It is an amenable number.

30047980 is an abundant number, since it is smaller than the sum of its proper divisors (33209060).

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

30047980 is a wasteful number, since it uses less digits than its factorization.

30047980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3729 (or 3727 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 30047980 is about 5481.6037799170. The cubic root of 30047980 is about 310.8888123813. Note that the first 4 decimals are identical.

The spelling of 30047980 in words is "thirty million, forty-seven thousand, nine hundred eighty".