78051470 has 32 divisors (see below), whose sum is σ = 166104000. Its totient is φ = 25837056.

The previous prime is 78051469. The next prime is 78051481. The reversal of 78051470 is 7415087.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17195 + ... + 21254.

It is an arithmetic number, because the mean of its divisors is an integer number (5190750).

Almost surely, 2^78051470 is an apocalyptic number.

78051470 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

78051470 is an abundant number, since it is smaller than the sum of its proper divisors (88052530).

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

78051470 is a wasteful number, since it uses less digits than its factorization.

78051470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38492.

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 78051470 is about 8834.6743007312. The cubic root of 78051470 is about 427.3598277375.

The spelling of 78051470 in words is "seventy-eight million, fifty-one thousand, four hundred seventy".