36209820 has 96 divisors (see below), whose sum is σ = 111444480. Its totient is φ = 8743680.

The previous prime is 36209807. The next prime is 36209837. The reversal of 36209820 is 2890263.

It is a super-2 number, since 2×36209820² = 2622302128864800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25530 + ... + 26910.

It is an arithmetic number, because the mean of its divisors is an integer number (1160880).

Almost surely, 2^36209820 is an apocalyptic number.

36209820 is a gapful number since it is divisible by the number (30) 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 36209820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55722240).

36209820 is an abundant number, since it is smaller than the sum of its proper divisors (75234660).

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

36209820 is a wasteful number, since it uses less digits than its factorization.

36209820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1435 (or 1433 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 36209820 is about 6017.4595968731. The cubic root of 36209820 is about 330.8329737229.

The spelling of 36209820 in words is "thirty-six million, two hundred nine thousand, eight hundred twenty".