1397336028 has 48 divisors (see below), whose sum is σ = 3615185280. Its totient is φ = 416491200.

The previous prime is 1397336023. The next prime is 1397336033. The reversal of 1397336028 is 8206337931.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1397336023) and next prime (1397336033).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397336023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78718 + ... + 94821.

It is an arithmetic number, because the mean of its divisors is an integer number (75316360).

Almost surely, 2^1397336028 is an apocalyptic number.

It is an amenable number.

1397336028 is an abundant number, since it is smaller than the sum of its proper divisors (2217849252).

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

1397336028 is a wasteful number, since it uses less digits than its factorization.

1397336028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173618 (or 173616 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 42.

The square root of 1397336028 is about 37380.9580936605. The cubic root of 1397336028 is about 1117.9789305886.

The spelling of 1397336028 in words is "one billion, three hundred ninety-seven million, three hundred thirty-six thousand, twenty-eight".