20061590 has 8 divisors (see below), whose sum is σ = 36110880. Its totient is φ = 8024632.

The previous prime is 20061583. The next prime is 20061611. The reversal of 20061590 is 9516002.

20061590 = T₁₆₂₈ + T₁₆₂₉ + ... + T₁₆₄₂.

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

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, 1003070 + ... + 1003089.

It is an arithmetic number, because the mean of its divisors is an integer number (4513860).

Almost surely, 2^20061590 is an apocalyptic number.

20061590 is a deficient number, since it is larger than the sum of its proper divisors (16049290).

20061590 is a wasteful number, since it uses less digits than its factorization.

20061590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2006166.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 20061590 is about 4479.0166331462. The cubic root of 20061590 is about 271.7201110974.

Adding to 20061590 its reverse (9516002), we get a palindrome (29577592).

The spelling of 20061590 in words is "twenty million, sixty-one thousand, five hundred ninety".