144486738 has 48 divisors (see below), whose sum is σ = 345080736. Its totient is φ = 43326720.

The previous prime is 144486737. The next prime is 144486763. The reversal of 144486738 is 837684441.

It is a junction number, because it is equal to n+sod(n) for n = 144486693 and 144486702.

It is not an unprimeable number, because it can be changed into a prime (144486731) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15445 + ... + 22967.

It is an arithmetic number, because the mean of its divisors is an integer number (7189182).

Almost surely, 2^144486738 is an apocalyptic number.

144486738 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 144486738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172540368).

144486738 is an abundant number, since it is smaller than the sum of its proper divisors (200593998).

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

144486738 is a wasteful number, since it uses less digits than its factorization.

144486738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7639 (or 7636 counting only the distinct ones).

The product of its digits is 516096, while the sum is 45.

The square root of 144486738 is about 12020.2636410355. The cubic root of 144486738 is about 524.7381769308.

The spelling of 144486738 in words is "one hundred forty-four million, four hundred eighty-six thousand, seven hundred thirty-eight".