154012890 has 32 divisors (see below), whose sum is σ = 377498880. Its totient is φ = 40195904.

The previous prime is 154012883. The next prime is 154012897. The reversal of 154012890 is 98210451.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (154012883) and next prime (154012897).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (154012897) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 53205 + ... + 56024.

It is an arithmetic number, because the mean of its divisors is an integer number (11796840).

Almost surely, 2^154012890 is an apocalyptic number.

154012890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

154012890 is an abundant number, since it is smaller than the sum of its proper divisors (223485990).

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

154012890 is a wasteful number, since it uses less digits than its factorization.

154012890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109286.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 154012890 is about 12410.1929880240. The cubic root of 154012890 is about 536.0257956138.

The spelling of 154012890 in words is "one hundred fifty-four million, twelve thousand, eight hundred ninety".