40645234 has 32 divisors (see below), whose sum is σ = 72078336. Its totient is φ = 16828560.

The previous prime is 40645229. The next prime is 40645261. The reversal of 40645234 is 43254604.

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, 64099 + ... + 64729.

It is an arithmetic number, because the mean of its divisors is an integer number (2252448).

Almost surely, 2^40645234 is an apocalyptic number.

40645234 is a deficient number, since it is larger than the sum of its proper divisors (31433102).

40645234 is a wasteful number, since it uses less digits than its factorization.

40645234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 40645234 is about 6375.3614799476. The cubic root of 40645234 is about 343.8242804105.

Adding to 40645234 its reverse (43254604), we get a palindrome (83899838).

The spelling of 40645234 in words is "forty million, six hundred forty-five thousand, two hundred thirty-four".