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40088140 = 2255359641
BaseRepresentation
bin1001100011101…
…1001001001100
32210102200120221
42120323021030
540230310030
63551121124
7664513021
oct230731114
983380527
1040088140
11206a08a4
12115131a4
1383c79c1
145477548
1537bce7a
hex263b24c

40088140 has 48 divisors (see below), whose sum is σ = 87363360. Its totient is φ = 15441920.

The previous prime is 40088117. The next prime is 40088141. The reversal of 40088140 is 4188004.

It is not an unprimeable number, because it can be changed into a prime (40088141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62220 + ... + 62860.

It is an arithmetic number, because the mean of its divisors is an integer number (1820070).

Almost surely, 240088140 is an apocalyptic number.

It is an amenable number.

40088140 is an abundant number, since it is smaller than the sum of its proper divisors (47275220).

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

40088140 is a wasteful number, since it uses less digits than its factorization.

40088140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762 (or 760 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 40088140 is about 6331.5195648438. The cubic root of 40088140 is about 342.2462005244.

The spelling of 40088140 in words is "forty million, eighty-eight thousand, one hundred forty".

Divisors: 1 2 4 5 10 20 53 59 106 118 212 236 265 295 530 590 641 1060 1180 1282 2564 3127 3205 6254 6410 12508 12820 15635 31270 33973 37819 62540 67946 75638 135892 151276 169865 189095 339730 378190 679460 756380 2004407 4008814 8017628 10022035 20044070 40088140