40203164 has 72 divisors (see below), whose sum is σ = 83406960. Its totient is φ = 16837632.

The previous prime is 40203161. The next prime is 40203167. The reversal of 40203164 is 46130204.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40203161) and next prime (40203167).

It is a super-2 number, since 2×40203164² = 3232588791221792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40203161) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1086554 + ... + 1086590.

It is an arithmetic number, because the mean of its divisors is an integer number (1158430).

Almost surely, 2^40203164 is an apocalyptic number.

It is an amenable number.

40203164 is an abundant number, since it is smaller than the sum of its proper divisors (43203796).

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

40203164 is a wasteful number, since it uses less digits than its factorization.

40203164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 40203164 is about 6340.5965019074. The cubic root of 40203164 is about 342.5732210655.

Adding to 40203164 its reverse (46130204), we get a palindrome (86333368).

The spelling of 40203164 in words is "forty million, two hundred three thousand, one hundred sixty-four".