40161534 has 32 divisors (see below), whose sum is σ = 93062400. Its totient is φ = 11316672.

The previous prime is 40161503. The next prime is 40161551. The reversal of 40161534 is 43516104.

It is a super-2 number, since 2×40161534² = 3225897626466312, 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 15 ways as a sum of consecutive naturals, for example, 3484 + ... + 9615.

It is an arithmetic number, because the mean of its divisors is an integer number (2908200).

Almost surely, 2^40161534 is an apocalyptic number.

40161534 is an abundant number, since it is smaller than the sum of its proper divisors (52900866).

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

40161534 is a wasteful number, since it uses less digits than its factorization.

40161534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13184.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 40161534 is about 6337.3128374730. The cubic root of 40161534 is about 342.4549364406.

Adding to 40161534 its reverse (43516104), we get a palindrome (83677638).

The spelling of 40161534 in words is "forty million, one hundred sixty-one thousand, five hundred thirty-four".