30253893390 has 128 divisors (see below), whose sum is σ = 92305751040. Its totient is φ = 6907420800.

The previous prime is 30253893347. The next prime is 30253893403. The reversal of 30253893390 is 9339835203.

It is a happy number.

30253893390 is a `hidden beast` number, since 3 + 0 + 253 + 8 + 9 + 3 + 390 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1769985 + ... + 1786995.

It is an arithmetic number, because the mean of its divisors is an integer number (721138680).

Almost surely, 2^30253893390 is an apocalyptic number.

30253893390 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 30253893390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46152875520).

30253893390 is an abundant number, since it is smaller than the sum of its proper divisors (62051857650).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30253893390 is a wasteful number, since it uses less digits than its factorization.

30253893390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17975 (or 17969 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 45.

The spelling of 30253893390 in words is "thirty billion, two hundred fifty-three million, eight hundred ninety-three thousand, three hundred ninety".