154247090 has 16 divisors (see below), whose sum is σ = 278023320. Its totient is φ = 61614720.

The previous prime is 154247083. The next prime is 154247123. The reversal of 154247090 is 90742451.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 92294449 + 61952641 = 9607^2 + 7871^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2525 + ... + 17744.

Almost surely, 2^154247090 is an apocalyptic number.

154247090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

154247090 is a deficient number, since it is larger than the sum of its proper divisors (123776230).

154247090 is a wasteful number, since it uses less digits than its factorization.

154247090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21037.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 154247090 is about 12419.6251956329. The cubic root of 154247090 is about 536.2973608969.

The spelling of 154247090 in words is "one hundred fifty-four million, two hundred forty-seven thousand, ninety".