1860428 has 6 divisors (see below), whose sum is σ = 3255756. Its totient is φ = 930212.

The previous prime is 1860427. The next prime is 1860431. The reversal of 1860428 is 8240681.

It is a super-2 number, since 2×1860428² = 6922384686368, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1860428.

It is not an unprimeable number, because it can be changed into a prime (1860421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 232550 + ... + 232557.

It is an arithmetic number, because the mean of its divisors is an integer number (542626).

2^1860428 is an apocalyptic number.

It is an amenable number.

1860428 is a deficient number, since it is larger than the sum of its proper divisors (1395328).

1860428 is a wasteful number, since it uses less digits than its factorization.

1860428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465111 (or 465109 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 1860428 is about 1363.9750730860. The cubic root of 1860428 is about 122.9903268661.

The spelling of 1860428 in words is "one million, eight hundred sixty thousand, four hundred twenty-eight".