40274820 has 72 divisors (see below), whose sum is σ = 126706944. Its totient is φ = 10738656.

The previous prime is 40274809. The next prime is 40274827. The reversal of 40274820 is 2847204.

It is a super-2 number, since 2×40274820² = 3244122252064800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (40274827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 717 + ... + 9003.

Almost surely, 2^40274820 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 40274820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63353472).

40274820 is an abundant number, since it is smaller than the sum of its proper divisors (86432124).

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

40274820 is a wasteful number, since it uses less digits than its factorization.

40274820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8311 (or 8297 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 40274820 is about 6346.2445587922. The cubic root of 40274820 is about 342.7766284154.

The spelling of 40274820 in words is "forty million, two hundred seventy-four thousand, eight hundred twenty".