1550012240 has 80 divisors (see below), whose sum is σ = 4125009792. Its totient is φ = 530606592.

The previous prime is 1550012227. The next prime is 1550012279. The reversal of 1550012240 is 422100551.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 438962 + ... + 442478.

Almost surely, 2^1550012240 is an apocalyptic number.

1550012240 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 1550012240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2062504896).

1550012240 is an abundant number, since it is smaller than the sum of its proper divisors (2574997552).

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

1550012240 is a wasteful number, since it uses less digits than its factorization.

1550012240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4324 (or 4318 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 1550012240 is about 39370.1948179076. The cubic root of 1550012240 is about 1157.2975735528.

Adding to 1550012240 its reverse (422100551), we get a palindrome (1972112791).

The spelling of 1550012240 in words is "one billion, five hundred fifty million, twelve thousand, two hundred forty".