140147820 has 72 divisors (see below), whose sum is σ = 440875344. Its totient is φ = 37371456.

The previous prime is 140147797. The next prime is 140147827. The reversal of 140147820 is 28741041.

140147820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×140147820² = 39282822901504800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (140147827) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9559 + ... + 19278.

Almost surely, 2^140147820 is an apocalyptic number.

140147820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140147820 is an abundant number, since it is smaller than the sum of its proper divisors (300727524).

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

140147820 is a wasteful number, since it uses less digits than its factorization.

140147820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28861 (or 28847 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 140147820 is about 11838.4044533037. The cubic root of 140147820 is about 519.4320969694.

Adding to 140147820 its reverse (28741041), we get a palindrome (168888861).

The spelling of 140147820 in words is "one hundred forty million, one hundred forty-seven thousand, eight hundred twenty".