50090040 has 384 divisors, whose sum is σ = 220147200. Its totient is φ = 9538560.

The previous prime is 50090011. The next prime is 50090057. The reversal of 50090040 is 4009005.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a junction number, because it is equal to n+sod(n) for n = 50089995 and 50090022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 360291 + ... + 360429.

It is an arithmetic number, because the mean of its divisors is an integer number (573300).

Almost surely, 2^50090040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50090040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110073600).

50090040 is an abundant number, since it is smaller than the sum of its proper divisors (170057160).

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

50090040 is a wasteful number, since it uses less digits than its factorization.

50090040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 50090040 is about 7077.4317375726. The cubic root of 50090040 is about 368.6241573844.

Adding to 50090040 its reverse (4009005), we get a palindrome (54099045).

The spelling of 50090040 in words is "fifty million, ninety thousand, forty".