20387098 has 4 divisors (see below), whose sum is σ = 30580650. Its totient is φ = 10193548.

The previous prime is 20387089. The next prime is 20387113. The reversal of 20387098 is 89078302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89078302 = 2 ⋅44539151.

It can be written as a sum of positive squares in only one way, i.e., 18037009 + 2350089 = 4247^2 + 1533^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5096773 + ... + 5096776.

Almost surely, 2^20387098 is an apocalyptic number.

20387098 is a deficient number, since it is larger than the sum of its proper divisors (10193552).

20387098 is a wasteful number, since it uses less digits than its factorization.

20387098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10193551.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 20387098 is about 4515.2074149478. The cubic root of 20387098 is about 273.1818259438.

The spelling of 20387098 in words is "twenty million, three hundred eighty-seven thousand, ninety-eight".