40506198 has 32 divisors (see below), whose sum is σ = 83220480. Its totient is φ = 13137600.

The previous prime is 40506173. The next prime is 40506199. The reversal of 40506198 is 89160504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40506199) 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, 67098 + ... + 67698.

It is an arithmetic number, because the mean of its divisors is an integer number (2600640).

Almost surely, 2^40506198 is an apocalyptic number.

40506198 is an abundant number, since it is smaller than the sum of its proper divisors (42714282).

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

40506198 is a wasteful number, since it uses less digits than its factorization.

40506198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 40506198 is about 6364.4479729196. The cubic root of 40506198 is about 343.4317902400.

It can be divided in two parts, 40506 and 198, that added together give a palindrome (40704).

The spelling of 40506198 in words is "forty million, five hundred six thousand, one hundred ninety-eight".