140028100 has 36 divisors (see below), whose sum is σ = 319858000. Its totient is φ = 53062560.

The previous prime is 140028047. The next prime is 140028101. The reversal of 140028100 is 1820041.

It is a happy number.

It is a super-2 number, since 2×140028100² = 39215737579220000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (140028101) 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, 34950 + ... + 38749.

Almost surely, 2^140028100 is an apocalyptic number.

140028100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140028100 is an abundant number, since it is smaller than the sum of its proper divisors (179829900).

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

140028100 is a wasteful number, since it uses less digits than its factorization.

140028100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73732 (or 73725 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 140028100 is about 11833.3469483490. The cubic root of 140028100 is about 519.2841481192.

Adding to 140028100 its reverse (1820041), we get a palindrome (141848141).

The spelling of 140028100 in words is "one hundred forty million, twenty-eight thousand, one hundred".