144769620 has 48 divisors (see below), whose sum is σ = 429202368. Its totient is φ = 36334080.

The previous prime is 144769619. The next prime is 144769661. The reversal of 144769620 is 26967441.

It is a happy number.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69946 + ... + 71985.

It is an arithmetic number, because the mean of its divisors is an integer number (8941716).

Almost surely, 2^144769620 is an apocalyptic number.

144769620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144769620 is an abundant number, since it is smaller than the sum of its proper divisors (284432748).

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

144769620 is a wasteful number, since it uses less digits than its factorization.

144769620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141960 (or 141958 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 144769620 is about 12032.0247672617. The cubic root of 144769620 is about 525.0804049187.

The spelling of 144769620 in words is "one hundred forty-four million, seven hundred sixty-nine thousand, six hundred twenty".