78620124 has 96 divisors (see below), whose sum is σ = 208857600. Its totient is φ = 22809600.

The previous prime is 78620111. The next prime is 78620159. The reversal of 78620124 is 42102687.

It is a super-2 number, since 2×78620124² = 12362247795550752, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78620091 and 78620100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 394977 + ... + 395175.

It is an arithmetic number, because the mean of its divisors is an integer number (2175600).

Almost surely, 2^78620124 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78620124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104428800).

78620124 is an abundant number, since it is smaller than the sum of its proper divisors (130237476).

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

78620124 is a wasteful number, since it uses less digits than its factorization.

78620124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331 (or 329 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 78620124 is about 8866.7989714440. The cubic root of 78620124 is about 428.3951790196.

It can be divided in two parts, 786 and 20124, that added together give a triangular number (20910 = T₂₀₄).

The spelling of 78620124 in words is "seventy-eight million, six hundred twenty thousand, one hundred twenty-four".