36781240 has 16 divisors (see below), whose sum is σ = 82757880. Its totient is φ = 14712480.

The previous prime is 36781237. The next prime is 36781243. The reversal of 36781240 is 4218763.

It is an interprime number because it is at equal distance from previous prime (36781237) and next prime (36781243).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36781243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 459726 + ... + 459805.

Almost surely, 2^36781240 is an apocalyptic number.

It is an amenable number.

36781240 is an abundant number, since it is smaller than the sum of its proper divisors (45976640).

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

36781240 is a wasteful number, since it uses less digits than its factorization.

36781240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919542 (or 919538 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 36781240 is about 6064.7539109184. The cubic root of 36781240 is about 332.5641687449.

The spelling of 36781240 in words is "thirty-six million, seven hundred eighty-one thousand, two hundred forty".