30542649 has 8 divisors (see below), whose sum is σ = 41824320. Its totient is φ = 19811376.

The previous prime is 30542641. The next prime is 30542669. The reversal of 30542649 is 94624503.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30542649 - 2³ = 30542641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30542641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137469 + ... + 137690.

It is an arithmetic number, because the mean of its divisors is an integer number (5228040).

Almost surely, 2^30542649 is an apocalyptic number.

It is an amenable number.

30542649 is a deficient number, since it is larger than the sum of its proper divisors (11281671).

30542649 is a wasteful number, since it uses less digits than its factorization.

30542649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275199.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 30542649 is about 5526.5404187430. The cubic root of 30542649 is about 312.5855518300.

The spelling of 30542649 in words is "thirty million, five hundred forty-two thousand, six hundred forty-nine".