13913770 has 24 divisors (see below), whose sum is σ = 27122796. Its totient is φ = 5136768.

The previous prime is 13913759. The next prime is 13913773. The reversal of 13913770 is 7731931.

13913770 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 349281 + 13564489 = 591^2 + 3683^2 .

It is a super-2 number, since 2×13913770² = 387185991225800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (13913773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2427 + ... + 5806.

Almost surely, 2^13913770 is an apocalyptic number.

13913770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13913770 is a deficient number, since it is larger than the sum of its proper divisors (13209026).

13913770 is a wasteful number, since it uses less digits than its factorization.

13913770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8266 (or 8253 counting only the distinct ones).

The product of its (nonzero) digits is 3969, while the sum is 31.

The square root of 13913770 is about 3730.1166201608. The cubic root of 13913770 is about 240.5183818431.

The spelling of 13913770 in words is "thirteen million, nine hundred thirteen thousand, seven hundred seventy".