1240634880 has 400 divisors, whose sum is σ = 4610669184. Its totient is φ = 318504960.

The previous prime is 1240634851. The next prime is 1240634893. The reversal of 1240634880 is 884360421.

1240634880 is a `hidden beast` number, since 12 + 4 + 0 + 634 + 8 + 8 + 0 = 666.

It is a super-2 number, since 2×1240634880² = 3078349810945228800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6428064 + ... + 6428256.

Almost surely, 2^1240634880 is an apocalyptic number.

1240634880 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 1240634880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2305334592).

1240634880 is an abundant number, since it is smaller than the sum of its proper divisors (3370034304).

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

1240634880 is an equidigital number, since it uses as much as digits as its factorization.

1240634880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 1240634880 is about 35222.6472599661. The cubic root of 1240634880 is about 1074.5203932323.

The spelling of 1240634880 in words is "one billion, two hundred forty million, six hundred thirty-four thousand, eight hundred eighty".