11420897940 has 288 divisors, whose sum is σ = 37970989056. Its totient is φ = 2875720320.

The previous prime is 11420897933. The next prime is 11420897981. The reversal of 11420897940 is 4979802411.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9277125 + ... + 9278355.

It is an arithmetic number, because the mean of its divisors is an integer number (131843712).

Almost surely, 2^11420897940 is an apocalyptic number.

11420897940 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 11420897940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18985494528).

11420897940 is an abundant number, since it is smaller than the sum of its proper divisors (26550091116).

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

11420897940 is a wasteful number, since it uses less digits than its factorization.

11420897940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361 (or 1347 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The spelling of 11420897940 in words is "eleven billion, four hundred twenty million, eight hundred ninety-seven thousand, nine hundred forty".