40154452 has 24 divisors (see below), whose sum is σ = 75891200. Its totient is φ = 18480096.

The previous prime is 40154441. The next prime is 40154461. The reversal of 40154452 is 25445104.

It is a happy number.

It is a super-2 number, since 2×40154452² = 3224760030840608, 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 7 ways as a sum of consecutive naturals, for example, 21949 + ... + 23707.

Almost surely, 2^40154452 is an apocalyptic number.

It is an amenable number.

40154452 is a deficient number, since it is larger than the sum of its proper divisors (35736748).

40154452 is a wasteful number, since it uses less digits than its factorization.

40154452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2215 (or 2213 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 40154452 is about 6336.7540586644. The cubic root of 40154452 is about 342.4348059975.

Adding to 40154452 its reverse (25445104), we get a palindrome (65599556).

The spelling of 40154452 in words is "forty million, one hundred fifty-four thousand, four hundred fifty-two".