13601628 has 24 divisors (see below), whose sum is σ = 35263760. Its totient is φ = 4533840.

The previous prime is 13601611. The next prime is 13601629. The reversal of 13601628 is 82610631.

13601628 is a `hidden beast` number, since 1 + 36 + 0 + 1 + 628 = 666.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13601629) 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, 62863 + ... + 63078.

Almost surely, 2^13601628 is an apocalyptic number.

13601628 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13601628 is an abundant number, since it is smaller than the sum of its proper divisors (21662132).

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

13601628 is a wasteful number, since it uses less digits than its factorization.

13601628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125954 (or 125946 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 13601628 is about 3688.0385030528. The cubic root of 13601628 is about 238.7061624694.

The spelling of 13601628 in words is "thirteen million, six hundred one thousand, six hundred twenty-eight".