30277980 has 36 divisors (see below), whose sum is σ = 91843752. Its totient is φ = 8074080.

The previous prime is 30277939. The next prime is 30277981. The reversal of 30277980 is 8977203.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30277981) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 83926 + ... + 84285.

Almost surely, 2^30277980 is an apocalyptic number.

30277980 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30277980 is an abundant number, since it is smaller than the sum of its proper divisors (61565772).

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

30277980 is a wasteful number, since it uses less digits than its factorization.

30277980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168226 (or 168221 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 30277980 is about 5502.5430484459. The cubic root of 30277980 is about 311.6800220509.

The spelling of 30277980 in words is "thirty million, two hundred seventy-seven thousand, nine hundred eighty".