Search a number
-
+
30193027583221 = 389205937376897
BaseRepresentation
bin1101101110101110111001…
…01011110000110011110101
310221220102111000010222021001
412313113130223300303311
512424140310030130341
6144114252502123301
76234242240645416
oct667273453606365
9127812430128231
1030193027583221
119690877a38338
12347773ba20531
1313b0262092409
147654c945180d
153755cb081d31
hex1b75dcaf0cf5

30193027583221 has 8 divisors (see below), whose sum is σ = 30270871926360. Its totient is φ = 30115184406528.

The previous prime is 30193027583167. The next prime is 30193027583231. The reversal of 30193027583221 is 12238572039103.

It can be written as a sum of positive squares in 4 ways, for example, as 2252658784996 + 27940368798225 = 1500886^2 + 5285865^2 .

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 30193027583221 - 225 = 30192994028789 is a prime.

It is a super-2 number, since 2×301930275832212 (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30193027583231) 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, 79921045 + ... + 80297941.

It is an arithmetic number, because the mean of its divisors is an integer number (3783858990795).

Almost surely, 230193027583221 is an apocalyptic number.

It is an amenable number.

30193027583221 is a deficient number, since it is larger than the sum of its proper divisors (77844343139).

30193027583221 is a wasteful number, since it uses less digits than its factorization.

30193027583221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583223.

The product of its (nonzero) digits is 544320, while the sum is 46.

The spelling of 30193027583221 in words is "thirty trillion, one hundred ninety-three billion, twenty-seven million, five hundred eighty-three thousand, two hundred twenty-one".

Divisors: 1 389 205937 376897 80109493 146612933 77617037489 30193027583221