150689394 has 48 divisors (see below), whose sum is σ = 357640920. Its totient is φ = 45642240.

The previous prime is 150689381. The next prime is 150689443. The reversal of 150689394 is 493986051.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 149450625 + 1238769 = 12225^2 + 1113^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 384 + ... + 17364.

Almost surely, 2^150689394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 150689394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178820460).

150689394 is an abundant number, since it is smaller than the sum of its proper divisors (206951526).

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

150689394 is a wasteful number, since it uses less digits than its factorization.

150689394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17035 (or 17032 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 150689394 is about 12275.5608425847. The cubic root of 150689394 is about 532.1420301243.

The spelling of 150689394 in words is "one hundred fifty million, six hundred eighty-nine thousand, three hundred ninety-four".