11402020 has 48 divisors (see below), whose sum is σ = 28562688. Its totient is φ = 3738240.

The previous prime is 11402011. The next prime is 11402023. The reversal of 11402020 is 2020411.

It is a Harshad number since it is a multiple of its sum of digits (10).

11402020 is a modest number, since divided by 2020 gives 1140 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 11401988 and 11402006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11402023) 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, 1450 + ... + 4990.

It is an arithmetic number, because the mean of its divisors is an integer number (595056).

Almost surely, 2^11402020 is an apocalyptic number.

11402020 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 11402020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14281344).

11402020 is an abundant number, since it is smaller than the sum of its proper divisors (17160668).

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

11402020 is a wasteful number, since it uses less digits than its factorization.

11402020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3580 (or 3578 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 11402020 is about 3376.6877261601. The cubic root of 11402020 is about 225.0750038013.

Adding to 11402020 its reverse (2020411), we get a palindrome (13422431).

It can be divided in two parts, 1140 and 2020, that added together give a triangular number (3160 = T₇₉).

The spelling of 11402020 in words is "eleven million, four hundred two thousand, twenty".