64143030 has 128 divisors (see below), whose sum is σ = 185794560. Its totient is φ = 13864320.

The previous prime is 64143029. The next prime is 64143047. The reversal of 64143030 is 3034146.

It is a super-2 number, since 2×64143030² = 8228656595161800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 64142988 and 64143006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 384007 + ... + 384173.

It is an arithmetic number, because the mean of its divisors is an integer number (1451520).

Almost surely, 2^64143030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64143030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92897280).

64143030 is an abundant number, since it is smaller than the sum of its proper divisors (121651530).

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

64143030 is a wasteful number, since it uses less digits than its factorization.

64143030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 64143030 is about 8008.9343860466. The cubic root of 64143030 is about 400.2977574629.

Adding to 64143030 its reverse (3034146), we get a palindrome (67177176).

The spelling of 64143030 in words is "sixty-four million, one hundred forty-three thousand, thirty".