1958040 has 192 divisors, whose sum is σ = 7797600. Its totient is φ = 435456.

The previous prime is 1958029. The next prime is 1958041. The reversal of 1958040 is 408591.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1957995 and 1958013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1958041) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 52902 + ... + 52938.

2^1958040 is an apocalyptic number.

1958040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1958040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3898800).

1958040 is an abundant number, since it is smaller than the sum of its proper divisors (5839560).

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

1958040 is a wasteful number, since it uses less digits than its factorization.

1958040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71 (or 54 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1958040 is about 1399.2998249124. The cubic root of 1958040 is about 125.1047655023.

The spelling of 1958040 in words is "one million, nine hundred fifty-eight thousand, forty".