30197408 has 24 divisors (see below), whose sum is σ = 59625972. Its totient is φ = 15054336.

The previous prime is 30197407. The next prime is 30197417. The reversal of 30197408 is 80479103.

It can be written as a sum of positive squares in 2 ways, for example, as 30162064 + 35344 = 5492^2 + 188^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (30197407) 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 3 ways as a sum of consecutive naturals, for example, 11516 + ... + 13892.

Almost surely, 2^30197408 is an apocalyptic number.

It is an amenable number.

30197408 is a deficient number, since it is larger than the sum of its proper divisors (29428564).

30197408 is a wasteful number, since it uses less digits than its factorization.

30197408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2784 (or 2776 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 30197408 is about 5495.2168292070. The cubic root of 30197408 is about 311.4033083984.

The spelling of 30197408 in words is "thirty million, one hundred ninety-seven thousand, four hundred eight".