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30818992253 = 76765712137
BaseRepresentation
bin11100101100111101…
…001000000001111101
32221112211101000112112
4130230331020001331
51001104130223003
622054045543405
72140503053240
oct345475100175
987484330475
1030818992253
1112085577035
125b81274b65
132ba1c677ba
1416c5119257
15c059a33d8
hex72cf4807d

30818992253 has 8 divisors (see below), whose sum is σ = 35747403072. Its totient is φ = 26022005856.

The previous prime is 30818992229. The next prime is 30818992261. The reversal of 30818992253 is 35229981803.

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

It is not a de Polignac number, because 30818992253 - 212 = 30818988157 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 (30818992553) 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, 32855600 + ... + 32856537.

It is an arithmetic number, because the mean of its divisors is an integer number (4468425384).

Almost surely, 230818992253 is an apocalyptic number.

It is an amenable number.

30818992253 is a deficient number, since it is larger than the sum of its proper divisors (4928410819).

30818992253 is an equidigital number, since it uses as much as digits as its factorization.

30818992253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65712211.

The product of its (nonzero) digits is 933120, while the sum is 50.

The spelling of 30818992253 in words is "thirty billion, eight hundred eighteen million, nine hundred ninety-two thousand, two hundred fifty-three".

Divisors: 1 7 67 469 65712137 459984959 4402713179 30818992253