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40424220 = 22325224579
BaseRepresentation
bin1001101000110…
…1001100011100
32211001202121100
42122031030130
540322033340
64002233100
71000412604
oct232151434
984052540
1040424220
1120900351
1211655790
1384b4975
145523c04
153837830
hex268d31c

40424220 has 36 divisors (see below), whose sum is σ = 122620680. Its totient is φ = 10779744.

The previous prime is 40424207. The next prime is 40424233. The reversal of 40424220 is 2242404.

40424220 is a `hidden beast` number, since 404 + 242 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (40424207) and next prime (40424233).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 40424193 and 40424202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112110 + ... + 112469.

It is an arithmetic number, because the mean of its divisors is an integer number (3406130).

Almost surely, 240424220 is an apocalyptic number.

It is an amenable number.

40424220 is an abundant number, since it is smaller than the sum of its proper divisors (82196460).

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

40424220 is a wasteful number, since it uses less digits than its factorization.

40424220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224594 (or 224589 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 40424220 is about 6358.0044038991. The cubic root of 40424220 is about 343.1999502828.

Adding to 40424220 its reverse (2242404), we get a palindrome (42666624).

The spelling of 40424220 in words is "forty million, four hundred twenty-four thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 90 180 224579 449158 673737 898316 1122895 1347474 2021211 2245790 2694948 3368685 4042422 4491580 6737370 8084844 10106055 13474740 20212110 40424220