20283142 has 32 divisors (see below), whose sum is σ = 35450784. Its totient is φ = 8601600.

The previous prime is 20283139. The next prime is 20283167. The reversal of 20283142 is 24138202.

It is a super-2 number, since 2×20283142² = 822811698784328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72042 + ... + 72322.

It is an arithmetic number, because the mean of its divisors is an integer number (1107837).

Almost surely, 2^20283142 is an apocalyptic number.

20283142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20283142 is a deficient number, since it is larger than the sum of its proper divisors (15167642).

20283142 is a wasteful number, since it uses less digits than its factorization.

20283142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 20283142 is about 4503.6809389654. The cubic root of 20283142 is about 272.7167066681.

The spelling of 20283142 in words is "twenty million, two hundred eighty-three thousand, one hundred forty-two".