Search a number
-
+
30974080 = 27548397
BaseRepresentation
bin111011000101…
…0000010000000
32011021122110011
41312022002000
530412132310
63023514304
7524163304
oct166120200
964248404
1030974080
1116536315
12a458994
136556477
144183d04
152abc78a
hex1d8a080

30974080 has 32 divisors (see below), whose sum is σ = 74048940. Its totient is φ = 12389376.

The previous prime is 30974029. The next prime is 30974107. The reversal of 30974080 is 8047903.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 30735936 + 238144 = 5544^2 + 488^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23559 + ... + 24838.

Almost surely, 230974080 is an apocalyptic number.

It is an amenable number.

30974080 is an abundant number, since it is smaller than the sum of its proper divisors (43074860).

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

30974080 is an equidigital number, since it uses as much as digits as its factorization.

30974080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48416 (or 48404 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 30974080 is about 5565.4361913510. The cubic root of 30974080 is about 314.0504875070.

The spelling of 30974080 in words is "thirty million, nine hundred seventy-four thousand, eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 128 160 320 640 48397 96794 193588 241985 387176 483970 774352 967940 1548704 1935880 3097408 3871760 6194816 7743520 15487040 30974080