188207040 has 168 divisors, whose sum is σ = 695291472. Its totient is φ = 43008000.

The previous prime is 188207029. The next prime is 188207053. The reversal of 188207040 is 40702881.

It is a tau number, because it is divible by the number of its divisors (168).

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 = 188206989 and 188207007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45040 + ... + 49040.

Almost surely, 2^188207040 is an apocalyptic number.

188207040 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 188207040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (347645736).

188207040 is an abundant number, since it is smaller than the sum of its proper divisors (507084432).

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

188207040 is a wasteful number, since it uses less digits than its factorization.

188207040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4035 (or 4018 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 188207040 is about 13718.8570952540. The cubic root of 188207040 is about 573.0756488788.

The spelling of 188207040 in words is "one hundred eighty-eight million, two hundred seven thousand, forty".