73974810 has 160 divisors (see below), whose sum is σ = 225872640. Its totient is φ = 15410304.

The previous prime is 73974787. The next prime is 73974811. The reversal of 73974810 is 1847937.

It is a super-2 number, since 2×73974810² = 10944545029072200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73974811) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 936351 + ... + 936429.

It is an arithmetic number, because the mean of its divisors is an integer number (1411704).

Almost surely, 2^73974810 is an apocalyptic number.

73974810 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 73974810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112936320).

73974810 is an abundant number, since it is smaller than the sum of its proper divisors (151897830).

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

73974810 is a wasteful number, since it uses less digits than its factorization.

73974810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 109 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 73974810 is about 8600.8610034112. The cubic root of 73974810 is about 419.7860020937.

The spelling of 73974810 in words is "seventy-three million, nine hundred seventy-four thousand, eight hundred ten".