36399240 has 64 divisors (see below), whose sum is σ = 121334400. Its totient is φ = 9706176.

The previous prime is 36399229. The next prime is 36399241. The reversal of 36399240 is 4299363.

It is a happy number.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

It is a junction number, because it is equal to n+sod(n) for n = 36399195 and 36399204.

It is not an unprimeable number, because it can be changed into a prime (36399241) 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, 15772 + ... + 17931.

It is an arithmetic number, because the mean of its divisors is an integer number (1895850).

Almost surely, 2^36399240 is an apocalyptic number.

36399240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

36399240 is an abundant number, since it is smaller than the sum of its proper divisors (84935160).

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

36399240 is a wasteful number, since it uses less digits than its factorization.

36399240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33723 (or 33713 counting only the distinct ones).

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

The square root of 36399240 is about 6033.1782668839. The cubic root of 36399240 is about 331.4088527281.

The spelling of 36399240 in words is "thirty-six million, three hundred ninety-nine thousand, two hundred forty".