63442730 has 16 divisors (see below), whose sum is σ = 122981544. Its totient is φ = 23424960.

The previous prime is 63442721. The next prime is 63442739. The reversal of 63442730 is 3724436.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (63442721) and next prime (63442739).

It can be written as a sum of positive squares in 4 ways, for example, as 44528929 + 18913801 = 6673^2 + 4349^2 .

It is a junction number, because it is equal to n+sod(n) for n = 63442693 and 63442702.

It is not an unprimeable number, because it can be changed into a prime (63442739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243881 + ... + 244140.

Almost surely, 2^63442730 is an apocalyptic number.

63442730 is a deficient number, since it is larger than the sum of its proper divisors (59538814).

63442730 is a wasteful number, since it uses less digits than its factorization.

63442730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488041.

The product of its (nonzero) digits is 12096, while the sum is 29.

The square root of 63442730 is about 7965.0944752715. The cubic root of 63442730 is about 398.8356347560.

The spelling of 63442730 in words is "sixty-three million, four hundred forty-two thousand, seven hundred thirty".