126640320 has 224 divisors, whose sum is σ = 434522880. Its totient is φ = 31150080.

The previous prime is 126640313. The next prime is 126640333. The reversal of 126640320 is 23046621.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a zygodrome in base 2.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 966655 + ... + 966785.

Almost surely, 2^126640320 is an apocalyptic number.

126640320 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 126640320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217261440).

126640320 is an abundant number, since it is smaller than the sum of its proper divisors (307882560).

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

126640320 is a wasteful number, since it uses less digits than its factorization.

126640320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 126640320 is about 11253.4581351689. The cubic root of 126640320 is about 502.1775957191.

Adding to 126640320 its reverse (23046621), we get a palindrome (149686941).

The spelling of 126640320 in words is "one hundred twenty-six million, six hundred forty thousand, three hundred twenty".