150138890 has 32 divisors (see below), whose sum is σ = 304335360. Its totient is φ = 52833600.

The previous prime is 150138839. The next prime is 150138953. The reversal of 150138890 is 98831051.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 150138890.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18605 + ... + 25424.

It is an arithmetic number, because the mean of its divisors is an integer number (9510480).

Almost surely, 2^150138890 is an apocalyptic number.

150138890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

150138890 is an abundant number, since it is smaller than the sum of its proper divisors (154196470).

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

150138890 is a wasteful number, since it uses less digits than its factorization.

150138890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44078.

The product of its (nonzero) digits is 8640, while the sum is 35.

The square root of 150138890 is about 12253.1175624818. The cubic root of 150138890 is about 531.4932258340.

The spelling of 150138890 in words is "one hundred fifty million, one hundred thirty-eight thousand, eight hundred ninety".