40651312 has 40 divisors (see below), whose sum is σ = 86116016. Its totient is φ = 18475776.

The previous prime is 40651309. The next prime is 40651337. The reversal of 40651312 is 21315604.

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, 12478 + ... + 15394.

Almost surely, 2^40651312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40651312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43058008).

40651312 is an abundant number, since it is smaller than the sum of its proper divisors (45464704).

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

40651312 is a wasteful number, since it uses less digits than its factorization.

40651312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3005 (or 2999 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 40651312 is about 6375.8381409819. The cubic root of 40651312 is about 343.8414178017.

Adding to 40651312 its reverse (21315604), we get a palindrome (61966916).

The spelling of 40651312 in words is "forty million, six hundred fifty-one thousand, three hundred twelve".