40098180 has 24 divisors (see below), whose sum is σ = 112275072. Its totient is φ = 10692832.

The previous prime is 40098139. The next prime is 40098181. The reversal of 40098180 is 8189004.

It is a happy number.

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 (40098181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334092 + ... + 334211.

It is an arithmetic number, because the mean of its divisors is an integer number (4678128).

Almost surely, 2^40098180 is an apocalyptic number.

It is an amenable number.

40098180 is an abundant number, since it is smaller than the sum of its proper divisors (72176892).

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

40098180 is a wasteful number, since it uses less digits than its factorization.

40098180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668315 (or 668313 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 40098180 is about 6332.3123738489. The cubic root of 40098180 is about 342.2747697806.

The spelling of 40098180 in words is "forty million, ninety-eight thousand, one hundred eighty".