1204358940 has 72 divisors (see below), whose sum is σ = 3668512848. Its totient is φ = 319818240.

The previous prime is 1204358899. The next prime is 1204358941. The reversal of 1204358940 is 498534021.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1204358895 and 1204358904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204358941) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29499 + ... + 57261.

Almost surely, 2^1204358940 is an apocalyptic number.

1204358940 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 1204358940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1834256424).

1204358940 is an abundant number, since it is smaller than the sum of its proper divisors (2464153908).

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

1204358940 is a wasteful number, since it uses less digits than its factorization.

1204358940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28019 (or 28014 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 1204358940 is about 34703.8749997749. The cubic root of 1204358940 is about 1063.9436990862.

The spelling of 1204358940 in words is "one billion, two hundred four million, three hundred fifty-eight thousand, nine hundred forty".