13938510 has 16 divisors (see below), whose sum is σ = 33452496. Its totient is φ = 3716928.

The previous prime is 13938497. The next prime is 13938511. The reversal of 13938510 is 1583931.

It is a happy number.

It is a super-2 number, since 2×13938510² = 388564122040200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 464617 = 13938510 / (1 + 3 + 9 + 3 + 8 + 5 + 1 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13938511) 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, 232279 + ... + 232338.

It is an arithmetic number, because the mean of its divisors is an integer number (2090781).

Almost surely, 2^13938510 is an apocalyptic number.

13938510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13938510 is an abundant number, since it is smaller than the sum of its proper divisors (19513986).

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

13938510 is a wasteful number, since it uses less digits than its factorization.

13938510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464627.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 13938510 is about 3733.4313975216. The cubic root of 13938510 is about 240.6608522505.

The spelling of 13938510 in words is "thirteen million, nine hundred thirty-eight thousand, five hundred ten".