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399580038 = 23211132953101
BaseRepresentation
bin10111110100010…
…001101110000110
31000211212202202200
4113310101232012
51304243030123
6103352215330
712621242244
oct2764215606
91024782680
10399580038
11195609440
12b199a546
1364a253c0
143b0d5794
152512e143
hex17d11b86

399580038 has 192 divisors, whose sum is σ = 1082652480. Its totient is φ = 104832000.

The previous prime is 399580031. The next prime is 399580061. The reversal of 399580038 is 830085993.

399580038 is a `hidden beast` number, since 39 + 9 + 580 + 0 + 38 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 399579975 and 399580002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399580031) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3956188 + ... + 3956288.

It is an arithmetic number, because the mean of its divisors is an integer number (5638815).

Almost surely, 2399580038 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 399580038, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (541326240).

399580038 is an abundant number, since it is smaller than the sum of its proper divisors (683072442).

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

399580038 is a wasteful number, since it uses less digits than its factorization.

399580038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 399580038 is about 19989.4981928011. The cubic root of 399580038 is about 736.5483505603.

The spelling of 399580038 in words is "three hundred ninety-nine million, five hundred eighty thousand, thirty-eight".