126650440 has 64 divisors (see below), whose sum is σ = 326799360. Its totient is φ = 43272960.

The previous prime is 126650431. The next prime is 126650449. The reversal of 126650440 is 44056621.

It is an interprime number because it is at equal distance from previous prime (126650431) and next prime (126650449).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 126650399 and 126650408.

It is not an unprimeable number, because it can be changed into a prime (126650449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106650 + ... + 107830.

It is an arithmetic number, because the mean of its divisors is an integer number (5106240).

Almost surely, 2^126650440 is an apocalyptic number.

126650440 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 126650440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163399680).

126650440 is an abundant number, since it is smaller than the sum of its proper divisors (200148920).

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

126650440 is a wasteful number, since it uses less digits than its factorization.

126650440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1582 (or 1578 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 126650440 is about 11253.9077657496. The cubic root of 126650440 is about 502.1909719274.

The spelling of 126650440 in words is "one hundred twenty-six million, six hundred fifty thousand, four hundred forty".