20454416 has 10 divisors (see below), whose sum is σ = 39630462. Its totient is φ = 10227200.

The previous prime is 20454409. The next prime is 20454463. The reversal of 20454416 is 61445402.

It can be written as a sum of positive squares in only one way, i.e., 10240000 + 10214416 = 3200^2 + 3196^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 639185 + ... + 639216.

Almost surely, 2^20454416 is an apocalyptic number.

It is an amenable number.

20454416 is a deficient number, since it is larger than the sum of its proper divisors (19176046).

20454416 is a wasteful number, since it uses less digits than its factorization.

20454416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278409 (or 1278403 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 20454416 is about 4522.6558569053. The cubic root of 20454416 is about 273.4821768479.

Adding to 20454416 its reverse (61445402), we get a palindrome (81899818).

The spelling of 20454416 in words is "twenty million, four hundred fifty-four thousand, four hundred sixteen".