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140908680 = 233351129409
BaseRepresentation
bin10000110011000…
…01100010001000
3100211010220101000
420121201202020
5242033034210
621552055000
73330463323
oct1031414210
9324126330
10140908680
11725a2860
123b234460
1323267b23
14149dd7ba
15c585ac0
hex8661888

140908680 has 256 divisors, whose sum is σ = 531360000. Its totient is φ = 32901120.

The previous prime is 140908643. The next prime is 140908687. The reversal of 140908680 is 86809041.

It is a happy number.

It is a super-3 number, since 3×1409086803 (a number of 25 digits) contains 333 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 a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (140908687) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 344316 + ... + 344724.

It is an arithmetic number, because the mean of its divisors is an integer number (2075625).

Almost surely, 2140908680 is an apocalyptic number.

140908680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140908680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265680000).

140908680 is an abundant number, since it is smaller than the sum of its proper divisors (390451320).

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

140908680 is a wasteful number, since it uses less digits than its factorization.

140908680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469 (or 459 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 140908680 is about 11870.4961985588. The cubic root of 140908680 is about 520.3703968526.

The spelling of 140908680 in words is "one hundred forty million, nine hundred eight thousand, six hundred eighty".