194039040 has 288 divisors, whose sum is σ = 700519680. Its totient is φ = 45686784.

The previous prime is 194039011. The next prime is 194039047. The reversal of 194039040 is 40930491.

It is a super-2 number, since 2×194039040² = 75302298088243200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 194038989 and 194039007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194039047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8436469 + ... + 8436491.

It is an arithmetic number, because the mean of its divisors is an integer number (2432360).

Almost surely, 2^194039040 is an apocalyptic number.

194039040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194039040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (350259840).

194039040 is an abundant number, since it is smaller than the sum of its proper divisors (506480640).

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

194039040 is an equidigital number, since it uses as much as digits as its factorization.

194039040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86 (or 46 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 194039040 is about 13929.7896610107. The cubic root of 194039040 is about 578.9348663909.

The spelling of 194039040 in words is "one hundred ninety-four million, thirty-nine thousand, forty".