78621350 has 12 divisors (see below), whose sum is σ = 146235804. Its totient is φ = 31448520.

The previous prime is 78621331. The next prime is 78621371. The reversal of 78621350 is 5312687.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 786164 + ... + 786263.

It is an arithmetic number, because the mean of its divisors is an integer number (12186317).

Almost surely, 2^78621350 is an apocalyptic number.

78621350 is a deficient number, since it is larger than the sum of its proper divisors (67614454).

78621350 is a wasteful number, since it uses less digits than its factorization.

78621350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1572439 (or 1572434 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 78621350 is about 8866.8681054812. The cubic root of 78621350 is about 428.3974058021.

The spelling of 78621350 in words is "seventy-eight million, six hundred twenty-one thousand, three hundred fifty".