36731440 has 40 divisors (see below), whose sum is σ = 87226560. Its totient is φ = 14378496.

The previous prime is 36731423. The next prime is 36731447. The reversal of 36731440 is 4413763.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 36731399 and 36731408.

It is not an unprimeable number, because it can be changed into a prime (36731447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1125 + ... + 8644.

It is an arithmetic number, because the mean of its divisors is an integer number (2180664).

Almost surely, 2^36731440 is an apocalyptic number.

It is an amenable number.

36731440 is an abundant number, since it is smaller than the sum of its proper divisors (50495120).

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

36731440 is a wasteful number, since it uses less digits than its factorization.

36731440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9829 (or 9823 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 36731440 is about 6060.6468301659. The cubic root of 36731440 is about 332.4140090819.

The spelling of 36731440 in words is "thirty-six million, seven hundred thirty-one thousand, four hundred forty".