40306734 has 40 divisors (see below), whose sum is σ = 97269480. Its totient is φ = 12401424.

The previous prime is 40306687. The next prime is 40306757. The reversal of 40306734 is 43760304.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40306698 and 40306707.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7464 + ... + 11675.

It is an arithmetic number, because the mean of its divisors is an integer number (2431737).

Almost surely, 2^40306734 is an apocalyptic number.

40306734 is an abundant number, since it is smaller than the sum of its proper divisors (56962746).

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

40306734 is a wasteful number, since it uses less digits than its factorization.

40306734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19166 (or 19157 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 27.

The square root of 40306734 is about 6348.7584613056. The cubic root of 40306734 is about 342.8671439047.

The spelling of 40306734 in words is "forty million, three hundred six thousand, seven hundred thirty-four".