11357220 has 72 divisors (see below), whose sum is σ = 37001664. Its totient is φ = 2595264.

The previous prime is 11357219. The next prime is 11357233. The reversal of 11357220 is 2275311.

It is a super-2 number, since 2×11357220² = 257972892256800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1009 + ... + 4871.

It is an arithmetic number, because the mean of its divisors is an integer number (513912).

Almost surely, 2^11357220 is an apocalyptic number.

11357220 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 11357220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18500832).

11357220 is an abundant number, since it is smaller than the sum of its proper divisors (25644444).

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

11357220 is a wasteful number, since it uses less digits than its factorization.

11357220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3889 (or 3880 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 11357220 is about 3370.0474774104. The cubic root of 11357220 is about 224.7798340172.

The spelling of 11357220 in words is "eleven million, three hundred fifty-seven thousand, two hundred twenty".