612309920 has 48 divisors (see below), whose sum is σ = 1448176968. Its totient is φ = 244654080.

The previous prime is 612309913. The next prime is 612309947. The reversal of 612309920 is 29903216.

612309920 is digitally balanced in base 2 and base 6, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 505890064 + 106419856 = 22492^2 + 10316^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209912 + ... + 212808.

Almost surely, 2^612309920 is an apocalyptic number.

It is an amenable number.

612309920 is an abundant number, since it is smaller than the sum of its proper divisors (835867048).

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

612309920 is a wasteful number, since it uses less digits than its factorization.

612309920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4233 (or 4225 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 612309920 is about 24744.8968476330. The cubic root of 612309920 is about 849.1617664907.

The spelling of 612309920 in words is "six hundred twelve million, three hundred nine thousand, nine hundred twenty".