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305373138 = 2377270789
BaseRepresentation
bin10010001100111…
…001111111010010
3210021121120012020
4102030321333102
51111133420023
650145112310
710365425460
oct2214717722
9707546166
10305373138
111474143a4
1286328696
134b35c685
142c7b1830
151bc20de3
hex12339fd2

305373138 has 16 divisors (see below), whose sum is σ = 697995840. Its totient is φ = 87249456.

The previous prime is 305373109. The next prime is 305373191. The reversal of 305373138 is 831373503.

305373138 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 305373099 and 305373108.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3635353 + ... + 3635436.

It is an arithmetic number, because the mean of its divisors is an integer number (43624740).

Almost surely, 2305373138 is an apocalyptic number.

305373138 is an abundant number, since it is smaller than the sum of its proper divisors (392622702).

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

305373138 is a wasteful number, since it uses less digits than its factorization.

305373138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7270801.

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 305373138 is about 17474.9288410568. The cubic root of 305373138 is about 673.4059416413.

The spelling of 305373138 in words is "three hundred five million, three hundred seventy-three thousand, one hundred thirty-eight".

Divisors: 1 2 3 6 7 14 21 42 7270789 14541578 21812367 43624734 50895523 101791046 152686569 305373138