40051216 has 10 divisors (see below), whose sum is σ = 77599262. Its totient is φ = 20025600.

The previous prime is 40051213. The next prime is 40051223. The reversal of 40051216 is 61215004.

It can be written as a sum of positive squares in only one way, i.e., 37161216 + 2890000 = 6096^2 + 1700^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40051193 and 40051202.

It is not an unprimeable number, because it can be changed into a prime (40051213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1251585 + ... + 1251616.

Almost surely, 2^40051216 is an apocalyptic number.

It is an amenable number.

40051216 is a deficient number, since it is larger than the sum of its proper divisors (37548046).

40051216 is a wasteful number, since it uses less digits than its factorization.

40051216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2503209 (or 2503203 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 40051216 is about 6328.6030054033. The cubic root of 40051216 is about 342.1410906292.

The spelling of 40051216 in words is "forty million, fifty-one thousand, two hundred sixteen".