40720416 has 48 divisors (see below), whose sum is σ = 116611488. Its totient is φ = 12339200.

The previous prime is 40720411. The next prime is 40720429. The reversal of 40720416 is 61402704.

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 not an unprimeable number, because it can be changed into a prime (40720411) 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, 18225 + ... + 20336.

It is an arithmetic number, because the mean of its divisors is an integer number (2429406).

Almost surely, 2^40720416 is an apocalyptic number.

It is an amenable number.

40720416 is an abundant number, since it is smaller than the sum of its proper divisors (75891072).

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

40720416 is a wasteful number, since it uses less digits than its factorization.

40720416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38585 (or 38577 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 40720416 is about 6381.2550489696. The cubic root of 40720416 is about 344.0361418670.

The spelling of 40720416 in words is "forty million, seven hundred twenty thousand, four hundred sixteen".