1240690000 has 100 divisors (see below), whose sum is σ = 3277200960. Its totient is φ = 451120000.

The previous prime is 1240689979. The next prime is 1240690007. The reversal of 1240690000 is 960421.

It is a tau number, because it is divible by the number of its divisors (100).

It is a super-2 number, since 2×1240690000² = 3078623352200000000, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240690007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 104361 + ... + 115639.

Almost surely, 2^1240690000 is an apocalyptic number.

1240690000 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 1240690000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1638600480).

1240690000 is an abundant number, since it is smaller than the sum of its proper divisors (2036510960).

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

1240690000 is a wasteful number, since it uses less digits than its factorization.

1240690000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11318 (or 11297 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 1240690000 is about 35223.4297024012. The cubic root of 1240690000 is about 1074.5363062373.

The spelling of 1240690000 in words is "one billion, two hundred forty million, six hundred ninety thousand".