166732020 has 432 divisors, whose sum is σ = 671448960. Its totient is φ = 33965568.

The previous prime is 166732019. The next prime is 166732057. The reversal of 166732020 is 20237661.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 5749366 + ... + 5749394.

It is an arithmetic number, because the mean of its divisors is an integer number (1554280).

Almost surely, 2^166732020 is an apocalyptic number.

166732020 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 166732020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (335724480).

166732020 is an abundant number, since it is smaller than the sum of its proper divisors (504716940).

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

166732020 is a wasteful number, since it uses less digits than its factorization.

166732020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86 (or 59 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 166732020 is about 12912.4753629968. The cubic root of 166732020 is about 550.3931294000.

Adding to 166732020 its reverse (20237661), we get a palindrome (186969681).

The spelling of 166732020 in words is "one hundred sixty-six million, seven hundred thirty-two thousand, twenty".