[go: up one dir, main page]

Search a number
-
+
7913490 = 23513103197
BaseRepresentation
bin11110001100000000010010
3112220001021020
4132030000102
54011212430
6441340310
7124156254
oct36140022
915801236
107913490
114515582
122797696
131840c50
14109dcd4
15a64b10
hex78c012

7913490 has 64 divisors (see below), whose sum is σ = 20756736. Its totient is φ = 1919232.

The previous prime is 7913473. The next prime is 7913527. The reversal of 7913490 is 943197.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40072 + ... + 40268.

It is an arithmetic number, because the mean of its divisors is an integer number (324324).

Almost surely, 27913490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7913490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10378368).

7913490 is an abundant number, since it is smaller than the sum of its proper divisors (12843246).

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

7913490 is a wasteful number, since it uses less digits than its factorization.

7913490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 7913490 is about 2813.0926042347. The cubic root of 7913490 is about 199.2764690042.

The spelling of 7913490 in words is "seven million, nine hundred thirteen thousand, four hundred ninety".

Divisors: 1 2 3 5 6 10 13 15 26 30 39 65 78 103 130 195 197 206 309 390 394 515 591 618 985 1030 1182 1339 1545 1970 2561 2678 2955 3090 4017 5122 5910 6695 7683 8034 12805 13390 15366 20085 20291 25610 38415 40170 40582 60873 76830 101455 121746 202910 263783 304365 527566 608730 791349 1318915 1582698 2637830 3956745 7913490