1397604730 has 16 divisors (see below), whose sum is σ = 2519289864. Its totient is φ = 558241600.

The previous prime is 1397604727. The next prime is 1397604739. The reversal of 1397604730 is 374067931.

It can be written as a sum of positive squares in 4 ways, for example, as 1326489241 + 71115489 = 36421^2 + 8433^2 .

It is not an unprimeable number, because it can be changed into a prime (1397604739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92677 + ... + 106696.

Almost surely, 2^1397604730 is an apocalyptic number.

1397604730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1397604730 is a deficient number, since it is larger than the sum of its proper divisors (1121685134).

1397604730 is a wasteful number, since it uses less digits than its factorization.

1397604730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200081.

The product of its (nonzero) digits is 95256, while the sum is 40.

The square root of 1397604730 is about 37384.5520235297. The cubic root of 1397604730 is about 1118.0505869202.

The spelling of 1397604730 in words is "one billion, three hundred ninety-seven million, six hundred four thousand, seven hundred thirty".