144193890 has 16 divisors (see below), whose sum is σ = 346065408. Its totient is φ = 38451696.

The previous prime is 144193853. The next prime is 144193901. The reversal of 144193890 is 98391441.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2403202 + ... + 2403261.

It is an arithmetic number, because the mean of its divisors is an integer number (21629088).

Almost surely, 2^144193890 is an apocalyptic number.

144193890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

144193890 is an abundant number, since it is smaller than the sum of its proper divisors (201871518).

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

144193890 is a wasteful number, since it uses less digits than its factorization.

144193890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4806473.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 144193890 is about 12008.0760324042. The cubic root of 144193890 is about 524.3834212762.

The spelling of 144193890 in words is "one hundred forty-four million, one hundred ninety-three thousand, eight hundred ninety".