144434730 has 32 divisors (see below), whose sum is σ = 378157248. Its totient is φ = 35014400.

The previous prime is 144434729. The next prime is 144434753. The reversal of 144434730 is 37434441.

144434730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×144434730² = 41722782460345800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon 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, 218511 + ... + 219170.

It is an arithmetic number, because the mean of its divisors is an integer number (11817414).

Almost surely, 2^144434730 is an apocalyptic number.

144434730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

144434730 is an abundant number, since it is smaller than the sum of its proper divisors (233722518).

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

144434730 is a wasteful number, since it uses less digits than its factorization.

144434730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437702.

The product of its (nonzero) digits is 16128, while the sum is 30.

The square root of 144434730 is about 12018.1000994334. The cubic root of 144434730 is about 524.6752095411.

The spelling of 144434730 in words is "one hundred forty-four million, four hundred thirty-four thousand, seven hundred thirty".