146440020 has 24 divisors (see below), whose sum is σ = 410032224. Its totient is φ = 39050656.

The previous prime is 146440013. The next prime is 146440037. The reversal of 146440020 is 20044641.

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1220274 + ... + 1220393.

It is an arithmetic number, because the mean of its divisors is an integer number (17084676).

Almost surely, 2^146440020 is an apocalyptic number.

146440020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

146440020 is an abundant number, since it is smaller than the sum of its proper divisors (263592204).

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

146440020 is a wasteful number, since it uses less digits than its factorization.

146440020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2440679 (or 2440677 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 146440020 is about 12101.2404322863. The cubic root of 146440020 is about 527.0922044608.

Adding to 146440020 its reverse (20044641), we get a palindrome (166484661).

The spelling of 146440020 in words is "one hundred forty-six million, four hundred forty thousand, twenty".