253368612 has 216 divisors, whose sum is σ = 804585600. Its totient is φ = 67173120.

The previous prime is 253368601. The next prime is 253368613. The reversal of 253368612 is 216863352.

It is a happy number.

253368612 is a `hidden beast` number, since 2 + 5 + 3 + 36 + 8 + 612 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (253368613) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3568537 + ... + 3568607.

Almost surely, 2^253368612 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 253368612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (402292800).

253368612 is an abundant number, since it is smaller than the sum of its proper divisors (551216988).

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

253368612 is a wasteful number, since it uses less digits than its factorization.

253368612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136 (or 100 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 253368612 is about 15917.5567220601. The cubic root of 253368612 is about 632.7773675566. Note that the first 3 decimals are identical.

The spelling of 253368612 in words is "two hundred fifty-three million, three hundred sixty-eight thousand, six hundred twelve".