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40448808488 = 2311716473881
BaseRepresentation
bin100101101010111011…
…111101011000101000
310212101221120101000002
4211222323331120220
51130314343332423
630325410202132
72631234125234
oct455273753050
9125357511002
1040448808488
1116177330550
127a0a283348
133a78052b0a
141d5a0395c4
1510bb0dc228
hex96aefd628

40448808488 has 32 divisors (see below), whose sum is σ = 83901510720. Its totient is φ = 18126864000.

The previous prime is 40448808487. The next prime is 40448808503. The reversal of 40448808488 is 88480884404.

It is a super-2 number, since 2×404488084882 (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40448808487) 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, 3230693 + ... + 3243188.

It is an arithmetic number, because the mean of its divisors is an integer number (2621922210).

Almost surely, 240448808488 is an apocalyptic number.

It is an amenable number.

40448808488 is an abundant number, since it is smaller than the sum of its proper divisors (43452702232).

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

40448808488 is a wasteful number, since it uses less digits than its factorization.

40448808488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6473969 (or 6473965 counting only the distinct ones).

The product of its (nonzero) digits is 8388608, while the sum is 56.

The spelling of 40448808488 in words is "forty billion, four hundred forty-eight million, eight hundred eight thousand, four hundred eighty-eight".

Divisors: 1 2 4 8 11 22 44 71 88 142 284 568 781 1562 3124 6248 6473881 12947762 25895524 51791048 71212691 142425382 284850764 459645551 569701528 919291102 1838582204 3677164408 5056101061 10112202122 20224404244 40448808488