40343634 has 12 divisors (see below), whose sum is σ = 87411246. Its totient is φ = 13447872.

The previous prime is 40343629. The next prime is 40343657. The reversal of 40343634 is 43634304.

It can be written as a sum of positive squares in only one way, i.e., 27405225 + 12938409 = 5235^2 + 3597^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40343598 and 40343607.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1120639 + ... + 1120674.

Almost surely, 2^40343634 is an apocalyptic number.

40343634 is an abundant number, since it is smaller than the sum of its proper divisors (47067612).

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

40343634 is a wasteful number, since it uses less digits than its factorization.

40343634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2241321 (or 2241318 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

The square root of 40343634 is about 6351.6638764972. The cubic root of 40343634 is about 342.9717413048.

Adding to 40343634 its reverse (43634304), we get a palindrome (83977938).

The spelling of 40343634 in words is "forty million, three hundred forty-three thousand, six hundred thirty-four".