13403970 has 24 divisors (see below), whose sum is σ = 34850556. Its totient is φ = 3574368.

The previous prime is 13403969. The next prime is 13403989. The reversal of 13403970 is 7930431.

It can be written as a sum of positive squares in 2 ways, for example, as 11269449 + 2134521 = 3357^2 + 1461^2 .

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74377 + ... + 74556.

Almost surely, 2^13403970 is an apocalyptic number.

13403970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13403970 is an abundant number, since it is smaller than the sum of its proper divisors (21446586).

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

13403970 is a wasteful number, since it uses less digits than its factorization.

13403970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148946 (or 148943 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 13403970 is about 3661.1432640638. The cubic root of 13403970 is about 237.5442281436.

The spelling of 13403970 in words is "thirteen million, four hundred three thousand, nine hundred seventy".