78451050 has 24 divisors (see below), whose sum is σ = 194558976. Its totient is φ = 20920240.

The previous prime is 78451031. The next prime is 78451067. The reversal of 78451050 is 5015487.

It is a super-2 number, since 2×78451050² = 12309134492205000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 78450999 and 78451017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 261354 + ... + 261653.

It is an arithmetic number, because the mean of its divisors is an integer number (8106624).

Almost surely, 2^78451050 is an apocalyptic number.

78451050 is an abundant number, since it is smaller than the sum of its proper divisors (116107926).

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

78451050 is a wasteful number, since it uses less digits than its factorization.

78451050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523022 (or 523017 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 78451050 is about 8857.2597342519. The cubic root of 78451050 is about 428.0878680922.

The spelling of 78451050 in words is "seventy-eight million, four hundred fifty-one thousand, fifty".