40092780 has 144 divisors (see below), whose sum is σ = 140767200. Its totient is φ = 8451072.

The previous prime is 40092763. The next prime is 40092781. The reversal of 40092780 is 8729004.

It is a super-3 number, since 3×40092780³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (40092781) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37696 + ... + 38744.

It is an arithmetic number, because the mean of its divisors is an integer number (977550).

Almost surely, 2^40092780 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 40092780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70383600).

40092780 is an abundant number, since it is smaller than the sum of its proper divisors (100674420).

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

40092780 is a wasteful number, since it uses less digits than its factorization.

40092780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088 (or 1079 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 40092780 is about 6331.8859749683. The cubic root of 40092780 is about 342.2594044388.

The spelling of 40092780 in words is "forty million, ninety-two thousand, seven hundred eighty".