140407220 has 12 divisors (see below), whose sum is σ = 294855204. Its totient is φ = 56162880.

The previous prime is 140407213. The next prime is 140407243. The reversal of 140407220 is 22704041.

140407220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 105431824 + 34975396 = 10268^2 + 5914^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 7020361 = 140407220 / (1 + 4 + 0 + 4 + 0 + 7 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 140407192 and 140407201.

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, 3510161 + ... + 3510200.

It is an arithmetic number, because the mean of its divisors is an integer number (24571267).

Almost surely, 2^140407220 is an apocalyptic number.

140407220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140407220 is an abundant number, since it is smaller than the sum of its proper divisors (154447984).

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

140407220 is a wasteful number, since it uses less digits than its factorization.

140407220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7020370 (or 7020368 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 140407220 is about 11849.3552567218. The cubic root of 140407220 is about 519.7523722347.

The spelling of 140407220 in words is "one hundred forty million, four hundred seven thousand, two hundred twenty".