146621720 has 96 divisors (see below), whose sum is σ = 386596800. Its totient is φ = 49900032.

The previous prime is 146621663. The next prime is 146621731. The reversal of 146621720 is 27126641.

It is a congruent number.

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, 468284 + ... + 468596.

It is an arithmetic number, because the mean of its divisors is an integer number (4027050).

Almost surely, 2^146621720 is an apocalyptic number.

146621720 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 146621720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193298400).

146621720 is an abundant number, since it is smaller than the sum of its proper divisors (239975080).

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

146621720 is a wasteful number, since it uses less digits than its factorization.

146621720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577 (or 566 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 146621720 is about 12108.7455997721. The cubic root of 146621720 is about 527.3101163628.

The spelling of 146621720 in words is "one hundred forty-six million, six hundred twenty-one thousand, seven hundred twenty".