146431540 has 48 divisors (see below), whose sum is σ = 326592000. Its totient is φ = 54958592.

The previous prime is 146431513. The next prime is 146431543. The reversal of 146431540 is 45134641.

146431540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 146431499 and 146431508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146431543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203301 + ... + 204019.

It is an arithmetic number, because the mean of its divisors is an integer number (6804000).

Almost surely, 2^146431540 is an apocalyptic number.

146431540 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 146431540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163296000).

146431540 is an abundant number, since it is smaller than the sum of its proper divisors (180160460).

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

146431540 is a wasteful number, since it uses less digits than its factorization.

146431540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344 (or 1342 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 146431540 is about 12100.8900499096. The cubic root of 146431540 is about 527.0820300377.

The spelling of 146431540 in words is "one hundred forty-six million, four hundred thirty-one thousand, five hundred forty".