146478444 has 72 divisors (see below), whose sum is σ = 414908928. Its totient is φ = 40027680.

The previous prime is 146478433. The next prime is 146478457. The reversal of 146478444 is 444874641.

It is a happy number.

146478444 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 2×146478444² = 42911869113322272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 146478396 and 146478405.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8109 + ... + 18939.

It is an arithmetic number, because the mean of its divisors is an integer number (5762624).

Almost surely, 2^146478444 is an apocalyptic number.

146478444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 146478444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207454464).

146478444 is an abundant number, since it is smaller than the sum of its proper divisors (268430484).

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

146478444 is a wasteful number, since it uses less digits than its factorization.

146478444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10875 (or 10866 counting only the distinct ones).

The product of its digits is 344064, while the sum is 42.

The square root of 146478444 is about 12102.8279339996. The cubic root of 146478444 is about 527.1383011944.

The spelling of 146478444 in words is "one hundred forty-six million, four hundred seventy-eight thousand, four hundred forty-four".