146287290 has 64 divisors (see below), whose sum is σ = 362115072. Its totient is φ = 37800000.

The previous prime is 146287279. The next prime is 146287391. The reversal of 146287290 is 92782641.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 194415 + ... + 195165.

It is an arithmetic number, because the mean of its divisors is an integer number (5658048).

Almost surely, 2^146287290 is an apocalyptic number.

146287290 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 146287290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181057536).

146287290 is an abundant number, since it is smaller than the sum of its proper divisors (215827782).

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

146287290 is a wasteful number, since it uses less digits than its factorization.

146287290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 146287290 is about 12094.9282759345. The cubic root of 146287290 is about 526.9088966567.

The spelling of 146287290 in words is "one hundred forty-six million, two hundred eighty-seven thousand, two hundred ninety".