146999820 has 96 divisors (see below), whose sum is σ = 455486976. Its totient is φ = 35123200.

The previous prime is 146999819. The next prime is 146999821. The reversal of 146999820 is 28999641.

It is an interprime number because it is at equal distance from previous prime (146999819) and next prime (146999821).

It is a self number, because there is not a number n which added to its sum of digits gives 146999820.

It is not an unprimeable number, because it can be changed into a prime (146999821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45292 + ... + 48428.

It is an arithmetic number, because the mean of its divisors is an integer number (4744656).

Almost surely, 2^146999820 is an apocalyptic number.

146999820 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 146999820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227743488).

146999820 is an abundant number, since it is smaller than the sum of its proper divisors (308487156).

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

146999820 is a wasteful number, since it uses less digits than its factorization.

146999820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3231 (or 3229 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 48.

The square root of 146999820 is about 12124.3482299050. The cubic root of 146999820 is about 527.7629933768.

The spelling of 146999820 in words is "one hundred forty-six million, nine hundred ninety-nine thousand, eight hundred twenty".