30904224 has 48 divisors (see below), whose sum is σ = 87367392. Its totient is φ = 9508608.

The previous prime is 30904199. The next prime is 30904253. The reversal of 30904224 is 42240903.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×30904224² = 1910142122084352, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 30904194 and 30904203.

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, 11134 + ... + 13629.

It is an arithmetic number, because the mean of its divisors is an integer number (1820154).

Almost surely, 2^30904224 is an apocalyptic number.

It is an amenable number.

30904224 is an abundant number, since it is smaller than the sum of its proper divisors (56463168).

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

30904224 is a wasteful number, since it uses less digits than its factorization.

30904224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24789 (or 24781 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 30904224 is about 5559.1567705903. The cubic root of 30904224 is about 313.8142165768.

The spelling of 30904224 in words is "thirty million, nine hundred four thousand, two hundred twenty-four".