40070306 has 4 divisors (see below), whose sum is σ = 60105462. Its totient is φ = 20035152.

The previous prime is 40070293. The next prime is 40070333. The reversal of 40070306 is 60307004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 27994681 + 12075625 = 5291^2 + 3475^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10017575 + ... + 10017578.

Almost surely, 2^40070306 is an apocalyptic number.

40070306 is a deficient number, since it is larger than the sum of its proper divisors (20035156).

40070306 is a wasteful number, since it uses less digits than its factorization.

40070306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20035155.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 40070306 is about 6330.1110574776. Note that the first 3 decimals coincide. The cubic root of 40070306 is about 342.1954413383.

The spelling of 40070306 in words is "forty million, seventy thousand, three hundred six".