406078 has 4 divisors (see below), whose sum is σ = 609120. Its totient is φ = 203038.

The previous prime is 406073. The next prime is 406093. The reversal of 406078 is 870604.

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

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406073) by changing a digit.

406078 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101518 + ... + 101521.

It is an arithmetic number, because the mean of its divisors is an integer number (152280).

2⁴⁰⁶⁰⁷⁸ is an apocalyptic number.

406078 is a deficient number, since it is larger than the sum of its proper divisors (203042).

406078 is a wasteful number, since it uses less digits than its factorization.

406078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203041.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 406078 is about 637.2424970135. The cubic root of 406078 is about 74.0519479409.

The spelling of 406078 in words is "four hundred six thousand, seventy-eight".