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40440212 = 2217594709
BaseRepresentation
bin1001101001000…
…1000110010100
32211002120112122
42122101012110
540323041322
64002435112
71000510331
oct232210624
984076478
1040440212
112091136a
1211662a98
1384bc027
145529988
15383c442
hex2691194

40440212 has 12 divisors (see below), whose sum is σ = 74933460. Its totient is φ = 19030656.

The previous prime is 40440203. The next prime is 40440221. The reversal of 40440212 is 21204404.

It is an interprime number because it is at equal distance from previous prime (40440203) and next prime (40440221).

It can be written as a sum of positive squares in 2 ways, for example, as 24167056 + 16273156 = 4916^2 + 4034^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297287 + ... + 297422.

It is an arithmetic number, because the mean of its divisors is an integer number (6244455).

Almost surely, 240440212 is an apocalyptic number.

It is an amenable number.

40440212 is a deficient number, since it is larger than the sum of its proper divisors (34493248).

40440212 is a wasteful number, since it uses less digits than its factorization.

40440212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594730 (or 594728 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 40440212 is about 6359.2619068568. The cubic root of 40440212 is about 343.2452014549.

Adding to 40440212 its reverse (21204404), we get a palindrome (61644616).

The spelling of 40440212 in words is "forty million, four hundred forty thousand, two hundred twelve".

Divisors: 1 2 4 17 34 68 594709 1189418 2378836 10110053 20220106 40440212