30900293 has 4 divisors (see below), whose sum is σ = 32243808. Its totient is φ = 29556780.

The previous prime is 30900277. The next prime is 30900323. The reversal of 30900293 is 39200903.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30900293 - 2⁴ = 30900277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30900193) 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, 671723 + ... + 671768.

It is an arithmetic number, because the mean of its divisors is an integer number (8060952).

Almost surely, 2^30900293 is an apocalyptic number.

It is an amenable number.

30900293 is a deficient number, since it is larger than the sum of its proper divisors (1343515).

30900293 is a wasteful number, since it uses less digits than its factorization.

30900293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1343514.

The product of its (nonzero) digits is 1458, while the sum is 26.

The square root of 30900293 is about 5558.8031985311. The cubic root of 30900293 is about 313.8009103484.

The spelling of 30900293 in words is "thirty million, nine hundred thousand, two hundred ninety-three".