146638940 has 48 divisors (see below), whose sum is σ = 372641472. Its totient is φ = 47318016.

The previous prime is 146638879. The next prime is 146638951. The reversal of 146638940 is 49836641.

146638940 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

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 15 ways as a sum of consecutive naturals, for example, 28427 + ... + 33186.

It is an arithmetic number, because the mean of its divisors is an integer number (7763364).

Almost surely, 2^146638940 is an apocalyptic number.

146638940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

146638940 is an abundant number, since it is smaller than the sum of its proper divisors (226002532).

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

146638940 is a wasteful number, since it uses less digits than its factorization.

146638940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61646 (or 61644 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 146638940 is about 12109.4566352087. The cubic root of 146638940 is about 527.3307588814.

The spelling of 146638940 in words is "one hundred forty-six million, six hundred thirty-eight thousand, nine hundred forty".