19761434 has 16 divisors (see below), whose sum is σ = 36956736. Its totient is φ = 7699200.

The previous prime is 19761419. The next prime is 19761487. The reversal of 19761434 is 43416791.

It is a junction number, because it is equal to n+sod(n) for n = 19761394 and 19761403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64007 + ... + 64314.

It is an arithmetic number, because the mean of its divisors is an integer number (2309796).

Almost surely, 2^19761434 is an apocalyptic number.

19761434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

19761434 is a deficient number, since it is larger than the sum of its proper divisors (17195302).

19761434 is a wasteful number, since it uses less digits than its factorization.

19761434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128341.

The product of its digits is 18144, while the sum is 35.

The square root of 19761434 is about 4445.3834480279. The cubic root of 19761434 is about 270.3581620814.

The spelling of 19761434 in words is "nineteen million, seven hundred sixty-one thousand, four hundred thirty-four".