1860238428 has 12 divisors (see below), whose sum is σ = 4340556360. Its totient is φ = 620079472.

The previous prime is 1860238423. The next prime is 1860238433. The reversal of 1860238428 is 8248320681.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1860238423) and next prime (1860238433).

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×1860238428³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1860238428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1860238423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77509923 + ... + 77509946.

It is an arithmetic number, because the mean of its divisors is an integer number (361713030).

Almost surely, 2^1860238428 is an apocalyptic number.

It is an amenable number.

1860238428 is an abundant number, since it is smaller than the sum of its proper divisors (2480317932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1860238428 is a wasteful number, since it uses less digits than its factorization.

1860238428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155019876 (or 155019874 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 42.

The square root of 1860238428 is about 43130.4814255533. The cubic root of 1860238428 is about 1229.8614927651.

The spelling of 1860238428 in words is "one billion, eight hundred sixty million, two hundred thirty-eight thousand, four hundred twenty-eight".