36001812 has 96 divisors (see below), whose sum is σ = 107089920. Its totient is φ = 9141120.

The previous prime is 36001799. The next prime is 36001817. The reversal of 36001812 is 21810063.

It is a super-2 number, since 2×36001812² = 2592260934566688, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36001817) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43014 + ... + 43842.

It is an arithmetic number, because the mean of its divisors is an integer number (1115520).

Almost surely, 2^36001812 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 36001812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53544960).

36001812 is an abundant number, since it is smaller than the sum of its proper divisors (71088108).

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

36001812 is a wasteful number, since it uses less digits than its factorization.

36001812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901 (or 899 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 36001812 is about 6000.1509981000. The cubic root of 36001812 is about 330.1982646967.

Adding to 36001812 its reverse (21810063), we get a palindrome (57811875).

The spelling of 36001812 in words is "thirty-six million, one thousand, eight hundred twelve".