30142408 has 8 divisors (see below), whose sum is σ = 56517030. Its totient is φ = 15071200.

The previous prime is 30142403. The next prime is 30142423. The reversal of 30142408 is 80424103.

It can be written as a sum of positive squares in only one way, i.e., 29138404 + 1004004 = 5398^2 + 1002^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (30142403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1883893 + ... + 1883908.

Almost surely, 2^30142408 is an apocalyptic number.

It is an amenable number.

30142408 is a deficient number, since it is larger than the sum of its proper divisors (26374622).

30142408 is a wasteful number, since it uses less digits than its factorization.

30142408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3767807 (or 3767803 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 30142408 is about 5490.2101963404. The cubic root of 30142408 is about 311.2141355320.

The spelling of 30142408 in words is "thirty million, one hundred forty-two thousand, four hundred eight".