Search a number
-
+
30902328 = 23321725247
BaseRepresentation
bin111010111100…
…0100000111000
32011011000000200
41311320200320
530402333303
63022202200
7523444152
oct165704070
964130020
1030902328
1116497416
12a423360
13652c902
144165ad2
152aa63a3
hex1d78838

30902328 has 48 divisors (see below), whose sum is σ = 88620480. Its totient is φ = 9694464.

The previous prime is 30902327. The next prime is 30902383. The reversal of 30902328 is 82320903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30902321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11400 + ... + 13847.

It is an arithmetic number, because the mean of its divisors is an integer number (1846260).

Almost surely, 230902328 is an apocalyptic number.

It is an amenable number.

30902328 is an abundant number, since it is smaller than the sum of its proper divisors (57718152).

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

30902328 is a wasteful number, since it uses less digits than its factorization.

30902328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25276 (or 25269 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 30902328 is about 5558.9862385151. The cubic root of 30902328 is about 313.8077988573.

The spelling of 30902328 in words is "thirty million, nine hundred two thousand, three hundred twenty-eight".

Divisors: 1 2 3 4 6 8 9 12 17 18 24 34 36 51 68 72 102 136 153 204 306 408 612 1224 25247 50494 75741 100988 151482 201976 227223 302964 429199 454446 605928 858398 908892 1287597 1716796 1817784 2575194 3433592 3862791 5150388 7725582 10300776 15451164 30902328