Search a number
-
+
30872967 = 319541631
BaseRepresentation
bin111010111000…
…1010110000111
32011002111202020
41311301112013
530400413332
63021414223
7523262436
oct165612607
964074666
1030872967
1116477354
12a40a373
13651c438
14415911d
152a9c82c
hex1d71587

30872967 has 8 divisors (see below), whose sum is σ = 43330560. Its totient is φ = 19498680.

The previous prime is 30872957. The next prime is 30872971. The reversal of 30872967 is 76927803.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30872967 - 216 = 30807431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30872917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270759 + ... + 270872.

It is an arithmetic number, because the mean of its divisors is an integer number (5416320).

Almost surely, 230872967 is an apocalyptic number.

30872967 is a deficient number, since it is larger than the sum of its proper divisors (12457593).

30872967 is a wasteful number, since it uses less digits than its factorization.

30872967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541653.

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 30872967 is about 5556.3447517230. The cubic root of 30872967 is about 313.7083820715.

The spelling of 30872967 in words is "thirty million, eight hundred seventy-two thousand, nine hundred sixty-seven".

Divisors: 1 3 19 57 541631 1624893 10290989 30872967