146187840 has 224 divisors, whose sum is σ = 493776000. Its totient is φ = 36585472.

The previous prime is 146187823. The next prime is 146187859. The reversal of 146187840 is 48781641.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1642516 + ... + 1642604.

Almost surely, 2^146187840 is an apocalyptic number.

146187840 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 146187840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246888000).

146187840 is an abundant number, since it is smaller than the sum of its proper divisors (347588160).

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

146187840 is a wasteful number, since it uses less digits than its factorization.

146187840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 39.

The square root of 146187840 is about 12090.8163496101. The cubic root of 146187840 is about 526.7894673502.

The spelling of 146187840 in words is "one hundred forty-six million, one hundred eighty-seven thousand, eight hundred forty".