78419950 has 24 divisors (see below), whose sum is σ = 166699152. Its totient is φ = 26886720.

The previous prime is 78419933. The next prime is 78420007. The reversal of 78419950 is 5991487.

It is a super-2 number, since 2×78419950² = 12299377116005000, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78419897 and 78419906.

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, 111679 + ... + 112378.

It is an arithmetic number, because the mean of its divisors is an integer number (6945798).

Almost surely, 2^78419950 is an apocalyptic number.

78419950 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

78419950 is an abundant number, since it is smaller than the sum of its proper divisors (88279202).

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

78419950 is a wasteful number, since it uses less digits than its factorization.

78419950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224076 (or 224071 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 78419950 is about 8855.5039382296. The cubic root of 78419950 is about 428.0312922938.

The spelling of 78419950 in words is "seventy-eight million, four hundred nineteen thousand, nine hundred fifty".