Search a number
-
+
30894678790 = 2523059133981
BaseRepresentation
bin11100110001011101…
…110110001100000110
32221202002210021221121
4130301131312030012
51001233014210130
622105352104154
72142412302553
oct346135661406
987662707847
1030894678790
1112114271498
125ba269505a
132bb4847731
1416d11bba2a
15c0c453d7a
hex731776306

30894678790 has 16 divisors (see below), whose sum is σ = 55613248560. Its totient is φ = 12357243360.

The previous prime is 30894678767. The next prime is 30894678811. The reversal of 30894678790 is 9787649803.

It is a congruent number.

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, 163600 + ... + 297580.

It is an arithmetic number, because the mean of its divisors is an integer number (3475828035).

Almost surely, 230894678790 is an apocalyptic number.

30894678790 is a deficient number, since it is larger than the sum of its proper divisors (24718569770).

30894678790 is a wasteful number, since it uses less digits than its factorization.

30894678790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157047.

The product of its (nonzero) digits is 18289152, while the sum is 61.

The spelling of 30894678790 in words is "thirty billion, eight hundred ninety-four million, six hundred seventy-eight thousand, seven hundred ninety".

Divisors: 1 2 5 10 23059 46118 115295 133981 230590 267962 669905 1339810 3089467879 6178935758 15447339395 30894678790