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115022420 = 22543791693
BaseRepresentation
bin1101101101100…
…01101001010100
322000102202002122
412312301221110
5213421204140
615225155112
72564450222
oct666615124
9260382078
10115022420
1159a22057
123262ba98
131aaa3406
14113c1b12
15a170ab5
hex6db1a54

115022420 has 48 divisors (see below), whose sum is σ = 250440960. Its totient is φ = 44343936.

The previous prime is 115022407. The next prime is 115022437. The reversal of 115022420 is 24220511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67094 + ... + 68786.

It is an arithmetic number, because the mean of its divisors is an integer number (5217520).

Almost surely, 2115022420 is an apocalyptic number.

115022420 is a gapful number since it is divisible by the number (10) 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 115022420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125220480).

115022420 is an abundant number, since it is smaller than the sum of its proper divisors (135418540).

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

115022420 is a wasteful number, since it uses less digits than its factorization.

115022420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1824 (or 1822 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 115022420 is about 10724.8505817098. The cubic root of 115022420 is about 486.3260131451.

Adding to 115022420 its reverse (24220511), we get a palindrome (139242931).

The spelling of 115022420 in words is "one hundred fifteen million, twenty-two thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 43 79 86 158 172 215 316 395 430 790 860 1580 1693 3386 3397 6772 6794 8465 13588 16930 16985 33860 33970 67940 72799 133747 145598 267494 291196 363995 534988 668735 727990 1337470 1455980 2674940 5751121 11502242 23004484 28755605 57511210 115022420