Search a number
-
+
19304635028 = 2277111238647
BaseRepresentation
bin10001111110101001…
…010101101010010100
31211211101002001211112
4101332221111222110
5304013441310103
612511325154152
71252246455530
oct217651255224
954741061745
1019304635028
118206a66028
1238a90bb958
131a885cc183
14d11bd6bc0
1577ebb1cd8
hex47ea55a94

19304635028 has 48 divisors (see below), whose sum is σ = 39192459264. Its totient is φ = 8148682080.

The previous prime is 19304635019. The next prime is 19304635069. The reversal of 19304635028 is 82053640391.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2228201 + ... + 2236847.

It is an arithmetic number, because the mean of its divisors is an integer number (816509568).

Almost surely, 219304635028 is an apocalyptic number.

It is an amenable number.

19304635028 is an abundant number, since it is smaller than the sum of its proper divisors (19887824236).

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

19304635028 is a wasteful number, since it uses less digits than its factorization.

19304635028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9852 (or 9850 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 41.

The spelling of 19304635028 in words is "nineteen billion, three hundred four million, six hundred thirty-five thousand, twenty-eight".

Divisors: 1 2 4 7 14 28 71 142 284 497 994 1123 1988 2246 4492 7861 8647 15722 17294 31444 34588 60529 79733 121058 159466 242116 318932 558131 613937 1116262 1227874 2232524 2455748 4297559 8595118 9710581 17190236 19421162 38842324 67974067 135948134 271896268 689451251 1378902502 2757805004 4826158757 9652317514 19304635028