146809490 has 16 divisors (see below), whose sum is σ = 272782080. Its totient is φ = 56829360.

The previous prime is 146809489. The next prime is 146809499. The reversal of 146809490 is 94908641.

146809490 = 143² + 144² + ... + 762².

It is not an unprimeable number, because it can be changed into a prime (146809499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236480 + ... + 237099.

It is an arithmetic number, because the mean of its divisors is an integer number (17048880).

Almost surely, 2^146809490 is an apocalyptic number.

146809490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

146809490 is a deficient number, since it is larger than the sum of its proper divisors (125972590).

146809490 is a wasteful number, since it uses less digits than its factorization.

146809490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473617.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 146809490 is about 12116.4966058676. The cubic root of 146809490 is about 527.5351189155.

The spelling of 146809490 in words is "one hundred forty-six million, eight hundred nine thousand, four hundred ninety".