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140247819 = 3273213467
BaseRepresentation
bin10000101110000…
…00001100001011
3100202220022211200
420113000030023
5241400412234
621525555243
73322041525
oct1027001413
9322808750
10140247819
1172191298
123ab75b23
132309609a
14148aaa15
15c4a4d99
hex85c030b

140247819 has 12 divisors (see below), whose sum is σ = 205356216. Its totient is φ = 92217312.

The previous prime is 140247763. The next prime is 140247823. The reversal of 140247819 is 918742041.

It is not a de Polignac number, because 140247819 - 216 = 140182283 is a prime.

It is a super-2 number, since 2×1402478192 = 39338901468513522, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (140247619) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 106077 + ... + 107390.

It is an arithmetic number, because the mean of its divisors is an integer number (17113018).

Almost surely, 2140247819 is an apocalyptic number.

140247819 is a deficient number, since it is larger than the sum of its proper divisors (65108397).

140247819 is a wasteful number, since it uses less digits than its factorization.

140247819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213546 (or 213543 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 140247819 is about 11842.6272000768. The cubic root of 140247819 is about 519.5556102261. Note that the first 3 decimals are identical.

The spelling of 140247819 in words is "one hundred forty million, two hundred forty-seven thousand, eight hundred nineteen".

Divisors: 1 3 9 73 219 657 213467 640401 1921203 15583091 46749273 140247819