140445428 has 12 divisors (see below), whose sum is σ = 245874720. Its totient is φ = 70195512.

The previous prime is 140445391. The next prime is 140445433. The reversal of 140445428 is 824544041.

140445428 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 2×140445428² = 39449836492206368, which contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 140445394 and 140445403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8783 + ... + 18921.

It is an arithmetic number, because the mean of its divisors is an integer number (20489560).

Almost surely, 2^140445428 is an apocalyptic number.

It is an amenable number.

140445428 is a deficient number, since it is larger than the sum of its proper divisors (105429292).

140445428 is a wasteful number, since it uses less digits than its factorization.

140445428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13606 (or 13604 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 32.

The square root of 140445428 is about 11850.9673866735. The cubic root of 140445428 is about 519.7995134419.

Adding to 140445428 its reverse (824544041), we get a palindrome (964989469).

The spelling of 140445428 in words is "one hundred forty million, four hundred forty-five thousand, four hundred twenty-eight".