40134780 has 144 divisors (see below), whose sum is σ = 141994944. Its totient is φ = 8985600.

The previous prime is 40134779. The next prime is 40134791. The reversal of 40134780 is 8743104.

It is a super-2 number, since 2×40134780² = 3221601131296800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 66480 + ... + 67080.

It is an arithmetic number, because the mean of its divisors is an integer number (986076).

Almost surely, 2^40134780 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 40134780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70997472).

40134780 is an abundant number, since it is smaller than the sum of its proper divisors (101860164).

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

40134780 is a wasteful number, since it uses less digits than its factorization.

40134780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676 (or 671 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 40134780 is about 6335.2016542491. The cubic root of 40134780 is about 342.3788763099.

Adding to 40134780 its reverse (8743104), we get a palindrome (48877884).

The spelling of 40134780 in words is "forty million, one hundred thirty-four thousand, seven hundred eighty".