30494280 has 32 divisors (see below), whose sum is σ = 91483200. Its totient is φ = 8131776.

The previous prime is 30494279. The next prime is 30494323. The reversal of 30494280 is 8249403.

It is a happy number.

It is a super-2 number, since 2×30494280² = 1859802225436800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 126940 + ... + 127179.

It is an arithmetic number, because the mean of its divisors is an integer number (2858850).

Almost surely, 2^30494280 is an apocalyptic number.

30494280 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30494280 is an abundant number, since it is smaller than the sum of its proper divisors (60988920).

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

30494280 is a wasteful number, since it uses less digits than its factorization.

30494280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254133 (or 254129 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 30494280 is about 5522.1626198438. The cubic root of 30494280 is about 312.4204554876.

The spelling of 30494280 in words is "thirty million, four hundred ninety-four thousand, two hundred eighty".