78152406 has 8 divisors (see below), whose sum is σ = 156304824. Its totient is φ = 26050800.

The previous prime is 78152341. The next prime is 78152411. The reversal of 78152406 is 60425187.

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

78152406 is an admirable number.

It is a super-2 number, since 2×78152406² = 12215597127177672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6512695 + ... + 6512706.

It is an arithmetic number, because the mean of its divisors is an integer number (19538103).

Almost surely, 2^78152406 is an apocalyptic number.

78152406 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78152406 is a wasteful number, since it uses less digits than its factorization.

78152406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13025406.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 78152406 is about 8840.3849463697. The cubic root of 78152406 is about 427.5439686660.

The spelling of 78152406 in words is "seventy-eight million, one hundred fifty-two thousand, four hundred six".