1021950 has 48 divisors (see below), whose sum is σ = 2819760. Its totient is φ = 272160.

The previous prime is 1021919. The next prime is 1021961. The reversal of 1021950 is 591201.

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

It is a congruent 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, 972 + ... + 1728.

It is an arithmetic number, because the mean of its divisors is an integer number (58745).

2^1021950 is an apocalyptic number.

1021950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1021950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1409880).

1021950 is an abundant number, since it is smaller than the sum of its proper divisors (1797810).

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

1021950 is a wasteful number, since it uses less digits than its factorization.

1021950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778 (or 767 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 1021950 is about 1010.9154267297. The cubic root of 1021950 is about 100.7263776467.

The spelling of 1021950 in words is "one million, twenty-one thousand, nine hundred fifty".