405305038 has 4 divisors (see below), whose sum is σ = 607957560. Its totient is φ = 202652518.

The previous prime is 405305029. The next prime is 405305051. The reversal of 405305038 is 830503504.

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

It is a junction number, because it is equal to n+sod(n) for n = 405304997 and 405305015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101326258 + ... + 101326261.

It is an arithmetic number, because the mean of its divisors is an integer number (151989390).

Almost surely, 2^405305038 is an apocalyptic number.

405305038 is a deficient number, since it is larger than the sum of its proper divisors (202652522).

405305038 is a wasteful number, since it uses less digits than its factorization.

405305038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202652521.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 405305038 is about 20132.1891010392. The cubic root of 405305038 is about 740.0493259061.

The spelling of 405305038 in words is "four hundred five million, three hundred five thousand, thirty-eight".