40012760 has 64 divisors (see below), whose sum is σ = 93026880. Its totient is φ = 15482880.

The previous prime is 40012759. The next prime is 40012769. The reversal of 40012760 is 6721004.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40012769) 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, 207224 + ... + 207416.

It is an arithmetic number, because the mean of its divisors is an integer number (1453545).

Almost surely, 2^40012760 is an apocalyptic number.

40012760 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40012760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46513440).

40012760 is an abundant number, since it is smaller than the sum of its proper divisors (53014120).

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

40012760 is a wasteful number, since it uses less digits than its factorization.

40012760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348 (or 344 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 40012760 is about 6325.5640064740. The cubic root of 40012760 is about 342.0315509576.

Adding to 40012760 its reverse (6721004), we get a palindrome (46733764).

The spelling of 40012760 in words is "forty million, twelve thousand, seven hundred sixty".