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140670 = 2335521
BaseRepresentation
bin100010010101111110
321010222000
4202111332
514000140
63003130
71124055
oct422576
9233860
10140670
1196762
12694a6
134c04a
143939c
152ba30
hex2257e

140670 has 32 divisors (see below), whose sum is σ = 375840. Its totient is φ = 37440.

The previous prime is 140663. The next prime is 140677. The reversal of 140670 is 76041.

It is an interprime number because it is at equal distance from previous prime (140663) and next prime (140677).

It is a hoax number, since the sum of its digits (18) 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 (18).

It is an Ulam number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140677) 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, 10 + ... + 530.

It is an arithmetic number, because the mean of its divisors is an integer number (11745).

2140670 is an apocalyptic number.

140670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 140670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187920).

140670 is an abundant number, since it is smaller than the sum of its proper divisors (235170).

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

140670 is a wasteful number, since it uses less digits than its factorization.

140670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537 (or 531 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 140670 is about 375.0599952008. The cubic root of 140670 is about 52.0076418749.

The spelling of 140670 in words is "one hundred forty thousand, six hundred seventy".

Divisors: 1 2 3 5 6 9 10 15 18 27 30 45 54 90 135 270 521 1042 1563 2605 3126 4689 5210 7815 9378 14067 15630 23445 28134 46890 70335 140670