40047072 has 48 divisors (see below), whose sum is σ = 113213520. Its totient is φ = 12321792.

The previous prime is 40047031. The next prime is 40047083. The reversal of 40047072 is 27074004.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14797 + ... + 17292.

It is an arithmetic number, because the mean of its divisors is an integer number (2358615).

Almost surely, 2^40047072 is an apocalyptic number.

It is an amenable number.

40047072 is an abundant number, since it is smaller than the sum of its proper divisors (73166448).

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

40047072 is a wasteful number, since it uses less digits than its factorization.

40047072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32115 (or 32107 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 24.

The square root of 40047072 is about 6328.2755945044. The cubic root of 40047072 is about 342.1292900588.

The spelling of 40047072 in words is "forty million, forty-seven thousand, seventy-two".