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140492800 = 2145273
BaseRepresentation
bin10000101111111…
…00000000000000
3100210100202220001
420113330000000
5241431232200
621535125344
73324112000
oct1027740000
9323322801
10140492800
1172339358
123b073854
1323150746
1414932000
15c50276a
hex85fc000

140492800 has 180 divisors, whose sum is σ = 406310800. Its totient is φ = 48168960.

The previous prime is 140492789. The next prime is 140492801. The reversal of 140492800 is 8294041.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140492801) 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, 20070397 + ... + 20070403.

Almost surely, 2140492800 is an apocalyptic number.

140492800 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 140492800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203155400).

140492800 is an abundant number, since it is smaller than the sum of its proper divisors (265818000).

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

140492800 is an frugal number, since it uses more digits than its factorization.

140492800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59 (or 14 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 140492800 is about 11852.9658735694. The cubic root of 140492800 is about 519.8579493646.

Multiplying 140492800 by its sum of digits (28), we get a square (3933798400 = 627202).

140492800 divided by its sum of digits (28) gives a square (5017600 = 22402).

The spelling of 140492800 in words is "one hundred forty million, four hundred ninety-two thousand, eight hundred".