20631514 has 16 divisors (see below), whose sum is σ = 31385088. Its totient is φ = 10171152.

The previous prime is 20631509. The next prime is 20631547. The reversal of 20631514 is 41513602.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74344 + ... + 74620.

It is an arithmetic number, because the mean of its divisors is an integer number (1961568).

Almost surely, 2^20631514 is an apocalyptic number.

20631514 is a deficient number, since it is larger than the sum of its proper divisors (10753574).

20631514 is a wasteful number, since it uses less digits than its factorization.

20631514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 20631514 is about 4542.1926423260. The cubic root of 20631514 is about 274.2691957180.

The spelling of 20631514 in words is "twenty million, six hundred thirty-one thousand, five hundred fourteen".