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231472080 = 24310572
BaseRepresentation
bin11011100101111…
…11101111010000
3121010120000000000
431302333233100
5433224101310
634545130000
75510323500
oct1562775720
9533500000
10231472080
11109729444
1265629900
1338c56338
1422a55a00
15154c44c0
hexdcbfbd0

231472080 has 330 divisors, whose sum is σ = 939050946. Its totient is φ = 52907904.

The previous prime is 231472067. The next prime is 231472081. The reversal of 231472080 is 80274132.

It can be written as a sum of positive squares in only one way, i.e., 185177664 + 46294416 = 13608^2 + 6804^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231472081) by changing a digit.

It is a polite number, since it can be written in 65 ways as a sum of consecutive naturals, for example, 33067437 + ... + 33067443.

Almost surely, 2231472080 is an apocalyptic number.

231472080 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 231472080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (469525473).

231472080 is an abundant number, since it is smaller than the sum of its proper divisors (707578866).

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

231472080 is an frugal number, since it uses more digits than its factorization.

231472080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57 (or 17 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 231472080 is about 15214.2065189086. The cubic root of 231472080 is about 613.9969371759.

The spelling of 231472080 in words is "two hundred thirty-one million, four hundred seventy-two thousand, eighty".