253394068 has 6 divisors (see below), whose sum is σ = 443439626. Its totient is φ = 126697032.

The previous prime is 253394041. The next prime is 253394069. The reversal of 253394068 is 860493352.

It can be written as a sum of positive squares in only one way, i.e., 137874564 + 115519504 = 11742^2 + 10748^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 253394068.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253394069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31674255 + ... + 31674262.

Almost surely, 2^253394068 is an apocalyptic number.

It is an amenable number.

253394068 is a deficient number, since it is larger than the sum of its proper divisors (190045558).

253394068 is a wasteful number, since it uses less digits than its factorization.

253394068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63348521 (or 63348519 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 40.

The square root of 253394068 is about 15918.3563221835. The cubic root of 253394068 is about 632.7985586073.

The spelling of 253394068 in words is "two hundred fifty-three million, three hundred ninety-four thousand, sixty-eight".