19940130 has 96 divisors (see below), whose sum is σ = 61221888. Its totient is φ = 4406400.

The previous prime is 19940117. The next prime is 19940131. The reversal of 19940130 is 3104991.

It is a junction number, because it is equal to n+sod(n) for n = 19940094 and 19940103.

It is not an unprimeable number, because it can be changed into a prime (19940131) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19020 + ... + 20040.

It is an arithmetic number, because the mean of its divisors is an integer number (637728).

Almost surely, 2^19940130 is an apocalyptic number.

19940130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 19940130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30610944).

19940130 is an abundant number, since it is smaller than the sum of its proper divisors (41281758).

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

19940130 is a wasteful number, since it uses less digits than its factorization.

19940130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072 (or 1069 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 19940130 is about 4465.4372686222. The cubic root of 19940130 is about 271.1706373045.

The spelling of 19940130 in words is "nineteen million, nine hundred forty thousand, one hundred thirty".