612241520 has 160 divisors (see below), whose sum is σ = 1619896320. Its totient is φ = 213248000.

The previous prime is 612241517. The next prime is 612241559. The reversal of 612241520 is 25142216.

It is a happy number.

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, 2561561 + ... + 2561799.

It is an arithmetic number, because the mean of its divisors is an integer number (10124352).

Almost surely, 2^612241520 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 612241520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (809948160).

612241520 is an abundant number, since it is smaller than the sum of its proper divisors (1007654800).

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

612241520 is a wasteful number, since it uses less digits than its factorization.

612241520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375 (or 369 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 612241520 is about 24743.5147058780. The cubic root of 612241520 is about 849.1301458872.

Adding to 612241520 its reverse (25142216), we get a palindrome (637383736).

The spelling of 612241520 in words is "six hundred twelve million, two hundred forty-one thousand, five hundred twenty".