140211828 has 36 divisors (see below), whose sum is σ = 357023940. Its totient is φ = 46394496.

The previous prime is 140211803. The next prime is 140211847. The reversal of 140211828 is 828112041.

It can be written as a sum of positive squares in 2 ways, for example, as 64834704 + 75377124 = 8052^2 + 8682^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×140211828² = 39318713422203168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9283 + ... + 19146.

Almost surely, 2^140211828 is an apocalyptic number.

140211828 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

140211828 is an abundant number, since it is smaller than the sum of its proper divisors (216812112).

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

140211828 is a wasteful number, since it uses less digits than its factorization.

140211828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28576 (or 28571 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The square root of 140211828 is about 11841.1075495496. The cubic root of 140211828 is about 519.5111628902.

Adding to 140211828 its reverse (828112041), we get a palindrome (968323869).

The spelling of 140211828 in words is "one hundred forty million, two hundred eleven thousand, eight hundred twenty-eight".