78003406 has 8 divisors (see below), whose sum is σ = 126005544. Its totient is φ = 36001560.

The previous prime is 78003403. The next prime is 78003407. The reversal of 78003406 is 60430087.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78003403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1500040 + ... + 1500091.

It is an arithmetic number, because the mean of its divisors is an integer number (15750693).

Almost surely, 2^78003406 is an apocalyptic number.

78003406 is a deficient number, since it is larger than the sum of its proper divisors (48002138).

78003406 is a wasteful number, since it uses less digits than its factorization.

78003406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3000146.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 78003406 is about 8831.9536910018. The cubic root of 78003406 is about 427.2720871714.

The spelling of 78003406 in words is "seventy-eight million, three thousand, four hundred six".