Search a number
63030987 = 336734843
BaseRepresentation
bin1111000001110…
…0011011001011
311101121022021000
43300130123023
5112113442422
610130550043
71363516545
oct360343313
9141538230
1063030987
1132641128
1219138323
131009b756
14852a695
155800cac
hex3c1c6cb

63030987 has 16 divisors (see below), whose sum is σ = 94775680. Its totient is φ = 41392296.

The previous prime is 63030983. The next prime is 63031009. The reversal of 63030987 is 78903036.

It is not a de Polignac number, because 63030987 - 22 = 63030983 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63030983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15613 + ... + 19230.

It is an arithmetic number, because the mean of its divisors is an integer number (5923480).

Almost surely, 263030987 is an apocalyptic number.

63030987 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

63030987 is a deficient number, since it is larger than the sum of its proper divisors (31744693).

63030987 is a wasteful number, since it uses less digits than its factorization.

63030987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34919 (or 34913 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 63030987 is about 7939.2056907477. The cubic root of 63030987 is about 397.9709476870.

The spelling of 63030987 in words is "sixty-three million, thirty thousand, nine hundred eighty-seven".