13770146 has 16 divisors (see below), whose sum is σ = 23212224. Its totient is φ = 6078864.

The previous prime is 13770131. The next prime is 13770149. The reversal of 13770146 is 64107731.

It is a super-2 number, since 2×13770146² = 379233841722632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13770149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10916 + ... + 12111.

It is an arithmetic number, because the mean of its divisors is an integer number (1450764).

Almost surely, 2^13770146 is an apocalyptic number.

13770146 is a deficient number, since it is larger than the sum of its proper divisors (9442078).

13770146 is a wasteful number, since it uses less digits than its factorization.

13770146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23065.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 13770146 is about 3710.8147353378. The cubic root of 13770146 is about 239.6879393255.

Adding to 13770146 its reverse (64107731), we get a palindrome (77877877).

The spelling of 13770146 in words is "thirteen million, seven hundred seventy thousand, one hundred forty-six".