78373020 has 48 divisors (see below), whose sum is σ = 239395968. Its totient is φ = 18999360.

The previous prime is 78373003. The next prime is 78373021. The reversal of 78373020 is 2037387.

It is a super-2 number, since 2×78373020² = 12284660527840800, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78373021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58714 + ... + 60033.

It is an arithmetic number, because the mean of its divisors is an integer number (4987416).

Almost surely, 2^78373020 is an apocalyptic number.

It is an amenable number.

78373020 is an abundant number, since it is smaller than the sum of its proper divisors (161022948).

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

78373020 is a wasteful number, since it uses less digits than its factorization.

78373020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118770 (or 118768 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 78373020 is about 8852.8537771726. The cubic root of 78373020 is about 427.9458909091.

The spelling of 78373020 in words is "seventy-eight million, three hundred seventy-three thousand, twenty".