144782020 has 12 divisors (see below), whose sum is σ = 304042284. Its totient is φ = 57912800.

The previous prime is 144782009. The next prime is 144782039. The reversal of 144782020 is 20287441.

It can be written as a sum of positive squares in 2 ways, for example, as 50808384 + 93973636 = 7128^2 + 9694^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 144782020.

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, 3619531 + ... + 3619570.

It is an arithmetic number, because the mean of its divisors is an integer number (25336857).

Almost surely, 2^144782020 is an apocalyptic number.

144782020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144782020 is an abundant number, since it is smaller than the sum of its proper divisors (159260264).

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

144782020 is a wasteful number, since it uses less digits than its factorization.

144782020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7239110 (or 7239108 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 144782020 is about 12032.5400477206. The cubic root of 144782020 is about 525.0953961191.

The spelling of 144782020 in words is "one hundred forty-four million, seven hundred eighty-two thousand, twenty".