Search a number
-
+
28934492160 = 21235731373
BaseRepresentation
bin11010111100101000…
…010101000000000000
32202200111100111101210
4122330220111000000
5433224212222120
621143050330120
72043011061000
oct327450250000
982614314353
1028934492160
11112a8848242
125736129940
1329616ccca2
141586b28000
15b45307ce0
hex6bca15000

28934492160 has 416 divisors, whose sum is σ = 108042566400. Its totient is φ = 6608781312.

The previous prime is 28934492143. The next prime is 28934492179. The reversal of 28934492160 is 6129443982.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

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, 21073234 + ... + 21074606.

Almost surely, 228934492160 is an apocalyptic number.

28934492160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28934492160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54021283200).

28934492160 is an abundant number, since it is smaller than the sum of its proper divisors (79108074240).

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

28934492160 is an equidigital number, since it uses as much as digits as its factorization.

28934492160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1426 (or 1390 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 48.

The spelling of 28934492160 in words is "twenty-eight billion, nine hundred thirty-four million, four hundred ninety-two thousand, one hundred sixty".