146645730 has 144 divisors (see below), whose sum is σ = 484009344. Its totient is φ = 30461760.

The previous prime is 146645729. The next prime is 146645767. The reversal of 146645730 is 37546641.

It is a happy number.

146645730 is a `hidden beast` number, since 1 + 4 + 6 + 645 + 7 + 3 + 0 = 666.

146645730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 46999 + ... + 50021.

It is an arithmetic number, because the mean of its divisors is an integer number (3361176).

Almost surely, 2^146645730 is an apocalyptic number.

146645730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 146645730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242004672).

146645730 is an abundant number, since it is smaller than the sum of its proper divisors (337363614).

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

146645730 is a wasteful number, since it uses less digits than its factorization.

146645730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3061 (or 3051 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 146645730 is about 12109.7369913636. The cubic root of 146645730 is about 527.3388979669.

The spelling of 146645730 in words is "one hundred forty-six million, six hundred forty-five thousand, seven hundred thirty".