1500000040 has 64 divisors (see below), whose sum is σ = 4207800960. Its totient is φ = 467531520.

The previous prime is 1500000001. The next prime is 1500000041. The reversal of 1500000040 is 400000051.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1499999972 and 1500000026.

It is not an unprimeable number, because it can be changed into a prime (1500000041) 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, 240427 + ... + 246586.

It is an arithmetic number, because the mean of its divisors is an integer number (65746890).

Almost surely, 2^1500000040 is an apocalyptic number.

1500000040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1500000040 is an abundant number, since it is smaller than the sum of its proper divisors (2707800920).

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

1500000040 is a wasteful number, since it uses less digits than its factorization.

1500000040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487042 (or 487038 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 10.

The square root of 1500000040 is about 38729.8339784719. The cubic root of 1500000040 is about 1144.7142527286.

Adding to 1500000040 its reverse (400000051), we get a palindrome (1900000091).

The spelling of 1500000040 in words is "one billion, five hundred million, forty", and thus it is an aban number.