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140387371 = 1943916831
BaseRepresentation
bin10000101111000…
…10010000101011
3100210011102021021
420113202100223
5241414343441
621532553311
73323162425
oct1027422053
9323142237
10140387371
1172277123
123b022837
1323114767
1414905815
15c4d13d1
hex85e242b

140387371 has 8 divisors (see below), whose sum is σ = 148121600. Its totient is φ = 132687720.

The previous prime is 140387369. The next prime is 140387399. The reversal of 140387371 is 173783041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 140387371 - 21 = 140387369 is a prime.

It is a super-2 number, since 2×1403873712 = 39417227872583282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140387341) 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, 75 + ... + 16756.

It is an arithmetic number, because the mean of its divisors is an integer number (18515200).

Almost surely, 2140387371 is an apocalyptic number.

140387371 is a deficient number, since it is larger than the sum of its proper divisors (7734229).

140387371 is a wasteful number, since it uses less digits than its factorization.

140387371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17289.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 140387371 is about 11848.5176710000. The cubic root of 140387371 is about 519.7278790711.

The spelling of 140387371 in words is "one hundred forty million, three hundred eighty-seven thousand, three hundred seventy-one".

Divisors: 1 19 439 8341 16831 319789 7388809 140387371