146040440 has 128 divisors (see below), whose sum is σ = 412594560. Its totient is φ = 45287424.

The previous prime is 146040383. The next prime is 146040469. The reversal of 146040440 is 44040641.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 192542 + ... + 193298.

It is an arithmetic number, because the mean of its divisors is an integer number (3223395).

Almost surely, 2^146040440 is an apocalyptic number.

146040440 is a gapful number since it is divisible by the number (10) 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 146040440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206297280).

146040440 is an abundant number, since it is smaller than the sum of its proper divisors (266554120).

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

146040440 is a wasteful number, since it uses less digits than its factorization.

146040440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841 (or 837 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 146040440 is about 12084.7192768388. The cubic root of 146040440 is about 526.6123553103.

The spelling of 146040440 in words is "one hundred forty-six million, forty thousand, four hundred forty".