20761430 has 8 divisors (see below), whose sum is σ = 37370592. Its totient is φ = 8304568.

The previous prime is 20761421. The next prime is 20761439. The reversal of 20761430 is 3416702.

It is an interprime number because it is at equal distance from previous prime (20761421) and next prime (20761439).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20761396 and 20761405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20761439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1038062 + ... + 1038081.

It is an arithmetic number, because the mean of its divisors is an integer number (4671324).

Almost surely, 2^20761430 is an apocalyptic number.

20761430 is a deficient number, since it is larger than the sum of its proper divisors (16609162).

20761430 is a wasteful number, since it uses less digits than its factorization.

20761430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2076150.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 20761430 is about 4556.4712223386. The cubic root of 20761430 is about 274.8436797536.

The spelling of 20761430 in words is "twenty million, seven hundred sixty-one thousand, four hundred thirty".