30897885 has 8 divisors (see below), whose sum is σ = 49436640. Its totient is φ = 16478864.

The previous prime is 30897883. The next prime is 30897899. The reversal of 30897885 is 58879803.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 30897885 - 2¹ = 30897883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30897883) 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, 1029915 + ... + 1029944.

It is an arithmetic number, because the mean of its divisors is an integer number (6179580).

Almost surely, 2^30897885 is an apocalyptic number.

It is an amenable number.

30897885 is a deficient number, since it is larger than the sum of its proper divisors (18538755).

30897885 is a wasteful number, since it uses less digits than its factorization.

30897885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2059867.

The product of its (nonzero) digits is 483840, while the sum is 48.

The square root of 30897885 is about 5558.5866009265. The cubic root of 30897885 is about 313.7927588375.

The spelling of 30897885 in words is "thirty million, eight hundred ninety-seven thousand, eight hundred eighty-five".