40154838 has 8 divisors (see below), whose sum is σ = 80309688. Its totient is φ = 13384944.

The previous prime is 40154813. The next prime is 40154839. The reversal of 40154838 is 83845104.

It is a sphenic number, since it is the product of 3 distinct primes.

40154838 is an admirable number.

It is a super-2 number, since 2×40154838² = 3224822029612488, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40154799 and 40154808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40154839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3346231 + ... + 3346242.

It is an arithmetic number, because the mean of its divisors is an integer number (10038711).

Almost surely, 2^40154838 is an apocalyptic number.

40154838 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

40154838 is a wasteful number, since it uses less digits than its factorization.

40154838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6692478.

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 40154838 is about 6336.7845158250. The cubic root of 40154838 is about 342.4359032558.

The spelling of 40154838 in words is "forty million, one hundred fifty-four thousand, eight hundred thirty-eight".