1240650400 has 72 divisors (see below), whose sum is σ = 3304101024. Its totient is φ = 451142400.

The previous prime is 1240650377. The next prime is 1240650401. The reversal of 1240650400 is 40560421.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (1240650401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61692 + ... + 79291.

It is an arithmetic number, because the mean of its divisors is an integer number (45890292).

Almost surely, 2^1240650400 is an apocalyptic number.

1240650400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1240650400 is an abundant number, since it is smaller than the sum of its proper divisors (2063450624).

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

1240650400 is a wasteful number, since it uses less digits than its factorization.

1240650400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141014 (or 141001 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1240650400 is about 35222.8675720760. The cubic root of 1240650400 is about 1074.5248738648.

The spelling of 1240650400 in words is "one billion, two hundred forty million, six hundred fifty thousand, four hundred".