20280934 has 8 divisors (see below), whose sum is σ = 30640680. Its totient is φ = 10067376.

The previous prime is 20280929. The next prime is 20280941. The reversal of 20280934 is 43908202.

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

It is a super-2 number, since 2×20280934² = 822632567824712, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36199 + ... + 36754.

It is an arithmetic number, because the mean of its divisors is an integer number (3830085).

Almost surely, 2^20280934 is an apocalyptic number.

20280934 is a deficient number, since it is larger than the sum of its proper divisors (10359746).

20280934 is a wasteful number, since it uses less digits than its factorization.

20280934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73094.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 20280934 is about 4503.4357994758. The cubic root of 20280934 is about 272.7068104311.

The spelling of 20280934 in words is "twenty million, two hundred eighty thousand, nine hundred thirty-four".