20614490 has 16 divisors (see below), whose sum is σ = 39960648. Its totient is φ = 7611456.

The previous prime is 20614483. The next prime is 20614499. The reversal of 20614490 is 9441602.

It can be written as a sum of positive squares in 4 ways, for example, as 18826921 + 1787569 = 4339^2 + 1337^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (20614499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79157 + ... + 79416.

Almost surely, 2^20614490 is an apocalyptic number.

20614490 is a deficient number, since it is larger than the sum of its proper divisors (19346158).

20614490 is a wasteful number, since it uses less digits than its factorization.

20614490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158593.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 20614490 is about 4540.3182707823. The cubic root of 20614490 is about 274.1937376328.

The spelling of 20614490 in words is "twenty million, six hundred fourteen thousand, four hundred ninety".