40651072 has 112 divisors (see below), whose sum is σ = 102851712. Its totient is φ = 15482880.

The previous prime is 40651057. The next prime is 40651073. The reversal of 40651072 is 27015604.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40651073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 359688 + ... + 359800.

Almost surely, 2^40651072 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 40651072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51425856).

40651072 is an abundant number, since it is smaller than the sum of its proper divisors (62200640).

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

40651072 is a wasteful number, since it uses less digits than its factorization.

40651072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216 (or 206 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 40651072 is about 6375.8193198992. The cubic root of 40651072 is about 343.8407411355.

Adding to 40651072 its reverse (27015604), we get a palindrome (67666676).

The spelling of 40651072 in words is "forty million, six hundred fifty-one thousand, seventy-two".