19952394 has 64 divisors (see below), whose sum is σ = 52392960. Its totient is φ = 4907520.

The previous prime is 19952389. The next prime is 19952411. The reversal of 19952394 is 49325991.

19952394 = 253² + 254² + ... + 423².

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7642 + ... + 9914.

It is an arithmetic number, because the mean of its divisors is an integer number (818640).

Almost surely, 2^19952394 is an apocalyptic number.

19952394 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 19952394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26196480).

19952394 is an abundant number, since it is smaller than the sum of its proper divisors (32440566).

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

19952394 is a wasteful number, since it uses less digits than its factorization.

19952394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2315.

The product of its digits is 87480, while the sum is 42.

The square root of 19952394 is about 4466.8102713234. The cubic root of 19952394 is about 271.2262196089.

The spelling of 19952394 in words is "nineteen million, nine hundred fifty-two thousand, three hundred ninety-four".