40306730 has 32 divisors (see below), whose sum is σ = 74649600. Its totient is φ = 15662080.

The previous prime is 40306687. The next prime is 40306757. The reversal of 40306730 is 3760304.

It is a junction number, because it is equal to n+sod(n) for n = 40306696 and 40306705.

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, 89546 + ... + 89994.

It is an arithmetic number, because the mean of its divisors is an integer number (2332800).

Almost surely, 2^40306730 is an apocalyptic number.

40306730 is a deficient number, since it is larger than the sum of its proper divisors (34342870).

40306730 is a wasteful number, since it uses less digits than its factorization.

40306730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694.

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 40306730 is about 6348.7581462834. The cubic root of 40306730 is about 342.8671325628.

The spelling of 40306730 in words is "forty million, three hundred six thousand, seven hundred thirty".