40136406 has 32 divisors (see below), whose sum is σ = 83462400. Its totient is φ = 12852000.

The previous prime is 40136401. The next prime is 40136441. The reversal of 40136406 is 60463104.

It is a super-2 number, since 2×40136406² = 3221862173193672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40136401) 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, 43215 + ... + 44133.

It is an arithmetic number, because the mean of its divisors is an integer number (2608200).

Almost surely, 2^40136406 is an apocalyptic number.

40136406 is an abundant number, since it is smaller than the sum of its proper divisors (43325994).

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

40136406 is a wasteful number, since it uses less digits than its factorization.

40136406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 40136406 is about 6335.3299835131. The cubic root of 40136406 is about 342.3834999018.

The spelling of 40136406 in words is "forty million, one hundred thirty-six thousand, four hundred six".