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30418090 = 253041809
BaseRepresentation
bin111010000001…
…0010010101010
32010020101202221
41310002102222
530241334330
63003544254
7516356323
oct164022252
963211687
1030418090
111619661a
12a22b08a
1363c0391
14407b44a
152a0cb7a
hex1d024aa

30418090 has 8 divisors (see below), whose sum is σ = 54752580. Its totient is φ = 12167232.

The previous prime is 30418079. The next prime is 30418093. The reversal of 30418090 is 9081403.

It can be written as a sum of positive squares in 2 ways, for example, as 29517489 + 900601 = 5433^2 + 949^2 .

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

It is not an unprimeable number, because it can be changed into a prime (30418093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1520895 + ... + 1520914.

Almost surely, 230418090 is an apocalyptic number.

30418090 is a deficient number, since it is larger than the sum of its proper divisors (24334490).

30418090 is a wasteful number, since it uses less digits than its factorization.

30418090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3041816.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 30418090 is about 5515.2597400304. The cubic root of 30418090 is about 312.1600441769.

Adding to 30418090 its reverse (9081403), we get a palindrome (39499493).

The spelling of 30418090 in words is "thirty million, four hundred eighteen thousand, ninety".

Divisors: 1 2 5 10 3041809 6083618 15209045 30418090