1337428 has 12 divisors (see below), whose sum is σ = 2351412. Its totient is φ = 665600.

The previous prime is 1337419. The next prime is 1337431. The reversal of 1337428 is 8247331.

It can be written as a sum of positive squares in 2 ways, for example, as 611524 + 725904 = 782^2 + 852^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1337396 and 1337405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378 + ... + 1678.

It is an arithmetic number, because the mean of its divisors is an integer number (195951).

2^1337428 is an apocalyptic number.

It is an amenable number.

1337428 is a deficient number, since it is larger than the sum of its proper divisors (1013984).

1337428 is a wasteful number, since it uses less digits than its factorization.

1337428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1562 (or 1560 counting only the distinct ones).

The product of its digits is 4032, while the sum is 28.

The square root of 1337428 is about 1156.4722218886. The cubic root of 1337428 is about 110.1767955859.

Subtracting 1337428 from its reverse (8247331), we obtain a triangular number (6909903 = T₃₇₁₇).

The spelling of 1337428 in words is "one million, three hundred thirty-seven thousand, four hundred twenty-eight".