40340428 has 6 divisors (see below), whose sum is σ = 70595756. Its totient is φ = 20170212.

The previous prime is 40340387. The next prime is 40340437. The reversal of 40340428 is 82404304.

It is a plaindrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5042550 + ... + 5042557.

Almost surely, 2^40340428 is an apocalyptic number.

It is an amenable number.

40340428 is a deficient number, since it is larger than the sum of its proper divisors (30255328).

40340428 is a wasteful number, since it uses less digits than its factorization.

40340428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10085111 (or 10085109 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 40340428 is about 6351.4114966675. The cubic root of 40340428 is about 342.9626560505.

The spelling of 40340428 in words is "forty million, three hundred forty thousand, four hundred twenty-eight".