19428898 has 16 divisors (see below), whose sum is σ = 30255480. Its totient is φ = 9346176.

The previous prime is 19428883. The next prime is 19428901. The reversal of 19428898 is 89882491.

It can be written as a sum of positive squares in 4 ways, for example, as 19035769 + 393129 = 4363^2 + 627^2 .

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, 26140 + ... + 26872.

Almost surely, 2^19428898 is an apocalyptic number.

19428898 is a deficient number, since it is larger than the sum of its proper divisors (10826582).

19428898 is a wasteful number, since it uses less digits than its factorization.

19428898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221.

The product of its digits is 331776, while the sum is 49.

The square root of 19428898 is about 4407.8223648419. The cubic root of 19428898 is about 268.8330892898.

It can be divided in two parts, 194 and 28898, that added together give a palindrome (29092).

The spelling of 19428898 in words is "nineteen million, four hundred twenty-eight thousand, eight hundred ninety-eight".