78754830 has 128 divisors (see below), whose sum is σ = 238657536. Its totient is φ = 16156800.

The previous prime is 78754817. The next prime is 78754883. The reversal of 78754830 is 3845787.

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

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 63 ways as a sum of consecutive naturals, for example, 237765 + ... + 238095.

It is an arithmetic number, because the mean of its divisors is an integer number (1864512).

Almost surely, 2^78754830 is an apocalyptic number.

78754830 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 78754830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119328768).

78754830 is an abundant number, since it is smaller than the sum of its proper divisors (159902706).

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

78754830 is a wasteful number, since it uses less digits than its factorization.

78754830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462.

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

The square root of 78754830 is about 8874.3918101468. The cubic root of 78754830 is about 428.6397070580.

The spelling of 78754830 in words is "seventy-eight million, seven hundred fifty-four thousand, eight hundred thirty".