78203470 has 8 divisors (see below), whose sum is σ = 140766264. Its totient is φ = 31281384.

The previous prime is 78203453. The next prime is 78203501. The reversal of 78203470 is 7430287.

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

It is a super-2 number, since 2×78203470² = 12231565440081800, which contains 22 as substring.

It is a plaindrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3910164 + ... + 3910183.

It is an arithmetic number, because the mean of its divisors is an integer number (17595783).

Almost surely, 2^78203470 is an apocalyptic number.

78203470 is a deficient number, since it is larger than the sum of its proper divisors (62562794).

78203470 is a wasteful number, since it uses less digits than its factorization.

78203470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7820354.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 78203470 is about 8843.2725842869. The cubic root of 78203470 is about 427.6370660428.

The spelling of 78203470 in words is "seventy-eight million, two hundred three thousand, four hundred seventy".