40156534 has 8 divisors (see below), whose sum is σ = 65710728. Its totient is φ = 18252960.

The previous prime is 40156531. The next prime is 40156547. The reversal of 40156534 is 43565104.

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

It is a super-2 number, since 2×40156534² = 3225094445786312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40156531) 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, 912627 + ... + 912670.

It is an arithmetic number, because the mean of its divisors is an integer number (8213841).

Almost surely, 2^40156534 is an apocalyptic number.

40156534 is a deficient number, since it is larger than the sum of its proper divisors (25554194).

40156534 is a wasteful number, since it uses less digits than its factorization.

40156534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1825310.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 40156534 is about 6336.9183362262. The cubic root of 40156534 is about 342.4407242864.

The spelling of 40156534 in words is "forty million, one hundred fifty-six thousand, five hundred thirty-four".