1550039040 has 432 divisors, whose sum is σ = 5947414200. Its totient is φ = 373063680.

The previous prime is 1550039011. The next prime is 1550039081. The reversal of 1550039040 is 409300551.

It is a junction number, because it is equal to n+sod(n) for n = 1550038995 and 1550039013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 11151291 + ... + 11151429.

Almost surely, 2^1550039040 is an apocalyptic number.

1550039040 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 1550039040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2973707100).

1550039040 is an abundant number, since it is smaller than the sum of its proper divisors (4397375160).

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

1550039040 is a wasteful number, since it uses less digits than its factorization.

1550039040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 1550039040 is about 39370.5351754329. The cubic root of 1550039040 is about 1157.3042434778.

Adding to 1550039040 its reverse (409300551), we get a palindrome (1959339591).

The spelling of 1550039040 in words is "one billion, five hundred fifty million, thirty-nine thousand, forty".