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40115214860 = 2257286537249
BaseRepresentation
bin100101010111000011…
…011001101000001100
310211112200212001120112
4211113003121220030
51124123443333420
630232332135152
72620043462120
oct452703315014
9124480761515
1040115214860
1116015aa1736
1279366074b8
133a23bc2436
141d279dd580
15109bb948c5
hex9570d9a0c

40115214860 has 24 divisors (see below), whose sum is σ = 96276516000. Its totient is φ = 13753787904.

The previous prime is 40115214851. The next prime is 40115214863. The reversal of 40115214860 is 6841251104.

It is not an unprimeable number, because it can be changed into a prime (40115214863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143268485 + ... + 143268764.

It is an arithmetic number, because the mean of its divisors is an integer number (4011521500).

Almost surely, 240115214860 is an apocalyptic number.

It is an amenable number.

40115214860 is an abundant number, since it is smaller than the sum of its proper divisors (56161301140).

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

40115214860 is a wasteful number, since it uses less digits than its factorization.

40115214860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286537265 (or 286537263 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

Adding to 40115214860 its reverse (6841251104), we get a palindrome (46956465964).

The spelling of 40115214860 in words is "forty billion, one hundred fifteen million, two hundred fourteen thousand, eight hundred sixty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 286537249 573074498 1146148996 1432686245 2005760743 2865372490 4011521486 5730744980 8023042972 10028803715 20057607430 40115214860