36399420 has 36 divisors (see below), whose sum is σ = 110412120. Its totient is φ = 9706464.

The previous prime is 36399413. The next prime is 36399449. The reversal of 36399420 is 2499363.

It is a happy number.

36399420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100930 + ... + 101289.

Almost surely, 2^36399420 is an apocalyptic number.

36399420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

36399420 is an abundant number, since it is smaller than the sum of its proper divisors (74012700).

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

36399420 is a wasteful number, since it uses less digits than its factorization.

36399420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202234 (or 202229 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 36.

The square root of 36399420 is about 6033.1931843759. The cubic root of 36399420 is about 331.4093990169.

The spelling of 36399420 in words is "thirty-six million, three hundred ninety-nine thousand, four hundred twenty".