78246020 has 48 divisors (see below), whose sum is σ = 169365168. Its totient is φ = 30351360.

The previous prime is 78246001. The next prime is 78246029. The reversal of 78246020 is 2064287.

It can be written as a sum of positive squares in 8 ways, for example, as 9156676 + 69089344 = 3026^2 + 8312^2 .

It is a super-2 number, since 2×78246020² = 12244879291680800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78246029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102440 + ... + 103200.

It is an arithmetic number, because the mean of its divisors is an integer number (3528441).

Almost surely, 2^78246020 is an apocalyptic number.

It is an amenable number.

78246020 is an abundant number, since it is smaller than the sum of its proper divisors (91119148).

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

78246020 is a wasteful number, since it uses less digits than its factorization.

78246020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920 (or 918 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 78246020 is about 8845.6780407157. The cubic root of 78246020 is about 427.7146101640.

It can be divided in two parts, 7 and 8246020, that multiplied together give a triangular number (57722140 = T₁₀₇₄₄).

The spelling of 78246020 in words is "seventy-eight million, two hundred forty-six thousand, twenty".