1238750040 has 64 divisors (see below), whose sum is σ = 4054095360. Its totient is φ = 300302720.

The previous prime is 1238749991. The next prime is 1238750041. The reversal of 1238750040 is 400578321.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1238750041) 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, 467904 + ... + 470543.

It is an arithmetic number, because the mean of its divisors is an integer number (63345240).

Almost surely, 2^1238750040 is an apocalyptic number.

1238750040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1238750040 is an abundant number, since it is smaller than the sum of its proper divisors (2815345320).

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

1238750040 is a wasteful number, since it uses less digits than its factorization.

1238750040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938472 (or 938468 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 1238750040 is about 35195.8810090044. The cubic root of 1238750040 is about 1073.9759608170.

The spelling of 1238750040 in words is "one billion, two hundred thirty-eight million, seven hundred fifty thousand, forty".