78473850 has 96 divisors (see below), whose sum is σ = 239568000. Its totient is φ = 16554240.

The previous prime is 78473833. The next prime is 78473851. The reversal of 78473850 is 5837487.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78473851) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10776 + ... + 16524.

It is an arithmetic number, because the mean of its divisors is an integer number (2495500).

Almost surely, 2^78473850 is an apocalyptic number.

78473850 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 78473850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119784000).

78473850 is an abundant number, since it is smaller than the sum of its proper divisors (161094150).

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

78473850 is a wasteful number, since it uses less digits than its factorization.

78473850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5784 (or 5779 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 42.

The square root of 78473850 is about 8858.5467205406. The cubic root of 78473850 is about 428.1293353851.

The spelling of 78473850 in words is "seventy-eight million, four hundred seventy-three thousand, eight hundred fifty".